diff --git a/lib/model/copayer.js b/lib/model/copayer.js
index bd956f8..ee587b7 100644
--- a/lib/model/copayer.js
+++ b/lib/model/copayer.js
@@ -18,8 +18,8 @@ function Copayer() {
 
 Copayer.create = function(opts) {
   opts = opts || {};
-  $.checkArgument(opts.xPubKey, 'Missing extended public key');
-  $.checkArgument(opts.requestPubKey, 'Missing request public key');
+  $.checkArgument(opts.xPubKey, 'Missing copayer extended public key');
+  $.checkArgument(opts.requestPubKey, 'Missing copayer request public key');
 
   opts.copayerIndex = opts.copayerIndex || 0;
 
@@ -35,6 +35,7 @@ Copayer.create = function(opts) {
   x.addressManager = AddressManager.create({
     copayerIndex: opts.copayerIndex
   });
+  x.isTemporaryRequestKey = opts.isTemporaryRequestKey || false;
 
   return x;
 };
@@ -48,6 +49,8 @@ Copayer.fromObj = function(obj) {
   x.xPubKey = obj.xPubKey;
   x.requestPubKey = obj.requestPubKey;
   x.signature = obj.signature;
+  x.isTemporaryRequestKey = obj.isTemporaryRequestKey || false;
+
   x.addressManager = AddressManager.fromObj(obj.addressManager);
 
   return x;
diff --git a/lib/model/wallet.js b/lib/model/wallet.js
index 711b1d3..51ed4e2 100644
--- a/lib/model/wallet.js
+++ b/lib/model/wallet.js
@@ -20,7 +20,7 @@ Wallet.create = function(opts) {
   var x = new Wallet();
 
   x.createdOn = Math.floor(Date.now() / 1000);
-  x.id = Uuid.v4();
+  x.id = opts.id || Uuid.v4();
   x.name = opts.name;
   x.m = opts.m;
   x.n = opts.n;
@@ -100,6 +100,23 @@ Wallet.prototype.addCopayer = function(copayer) {
   });
 };
 
+Wallet.prototype.updateCopayerRequestKey = function(copayerId, requestPubKey) {
+  $.checkState(this.copayers.length == this.n);
+
+  var c = _.find(this.copayers, {
+    id: copayerId,
+  });
+
+  $.checkState(c)
+  .checkState(c.isTemporaryRequestKey);
+
+  c.requestPubKey = requestPubKey;
+  c.isTemporaryRequestKey = false;
+  this.publicKeyRing = _.map(this.copayers, function(copayer) {
+    return _.pick(copayer, ['xPubKey', 'requestPubKey']);
+  });
+};
+
 Wallet.prototype.getCopayer = function(copayerId) {
   return _.find(this.copayers, {
     id: copayerId
diff --git a/lib/server.js b/lib/server.js
index 78eb298..bcde6b4 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -121,17 +121,35 @@ WalletService.prototype.createWallet = function(opts, cb) {
     return cb(new ClientError('Invalid public key'));
   };
 
-  var wallet = Wallet.create({
-    name: opts.name,
-    m: opts.m,
-    n: opts.n,
-    network: network,
-    pubKey: pubKey.toString(),
-  });
+  var newWallet;
+  async.series([
 
-  self.storage.storeWallet(wallet, function(err) {
-    log.debug('Wallet created', wallet.id, network);
-    return cb(err, wallet.id);
+    function(acb) {
+      if (!opts.id)
+        return acb();
+
+      self.storage.fetchWallet(opts.id, function(err, wallet) {
+        if (wallet) return acb(new ClientError('Wallet already exists'));
+        return acb(err);
+      });
+    },
+    function(acb) {
+      var wallet = Wallet.create({
+        name: opts.name,
+        m: opts.m,
+        n: opts.n,
+        network: network,
+        pubKey: pubKey.toString(),
+        id: opts.id,
+      });
+      self.storage.storeWallet(wallet, function(err) {
+        log.debug('Wallet created', wallet.id, network);
+        newWallet = wallet;
+        return acb(err);
+      });
+    }
+  ], function(err) {
+    return cb(err, newWallet ? newWallet.id : null);
   });
 };
 
@@ -151,6 +169,63 @@ WalletService.prototype.getWallet = function(opts, cb) {
 };
 
 
+/**
+ * Replace temporary request key
+ * @param {Object} opts
+ * @param {string} opts.name - The copayer name.
+ * @param {string} opts.xPubKey - Extended Public Key for this copayer.
+ * @param {string} opts.requestPubKey - Public Key used to check requests from this copayer.
+ * @param {string} opts.copayerSignature - S(name|xPubKey|requestPubKey). Used by other copayers to verify the that the copayer joining knows the wallet secret.
+ */
+WalletService.prototype.replaceTemporaryRequestKey = function(opts, cb) {
+  var self = this;
+
+  if (!Utils.checkRequired(opts, ['name', 'xPubKey', 'requestPubKey', 'copayerSignature']))
+    return cb(new ClientError('Required argument missing'));
+
+
+  if (_.isEmpty(opts.name))
+    return cb(new ClientError('Invalid copayer name'));
+
+
+  if (opts.isTemporaryRequestKey)
+    return cb(new ClientError('Bad arguments'));
+
+  Utils.runLocked(self.walletId, cb, function(cb) {
+    self.storage.fetchWallet(self.walletId, function(err, wallet) {
+      if (err) return cb(err);
+
+      if (!wallet) return cb(new ClientError('Wallet not found'));
+      var hash = WalletUtils.getCopayerHash(opts.name, opts.xPubKey, opts.requestPubKey);
+      if (!self._verifySignature(hash, opts.copayerSignature, wallet.pubKey)) {
+        return cb(new ClientError());
+      }
+
+      var oldCopayerData = _.find(wallet.copayers, {
+        id: self.copayerId
+      });
+      $.checkState(oldCopayerData);
+
+      if (oldCopayerData.xPubKey !== opts.xPubKey || oldCopayerData.name !== opts.name || !oldCopayerData.isTemporaryRequestKey)
+        return cb(new ClientError('CDATAMISMATCH', 'Copayer data mismatch'));
+
+      if (wallet.copayers.length != wallet.n)
+        return cb(new ClientError('WNOTFULL', 'Replace only works on full wallets'));
+
+      wallet.updateCopayerRequestKey(self.copayerId, opts.requestPubKey);
+
+      self.storage.storeWalletAndUpdateCopayersLookup(wallet, function(err) {
+        if (err) return cb(err);
+
+        return cb(null, {
+          copayerId: self.copayerId,
+          wallet: wallet
+        });
+      });
+    });
+  });
+};
+
 /**
  * Verifies a signature
  * @param text
@@ -206,6 +281,7 @@ WalletService.prototype._notify = function(type, data) {
  * @param {string} opts.xPubKey - Extended Public Key for this copayer.
  * @param {string} opts.requestPubKey - Public Key used to check requests from this copayer.
  * @param {string} opts.copayerSignature - S(name|xPubKey|requestPubKey). Used by other copayers to verify the that the copayer joining knows the wallet secret.
+ * @param {string} opts.isTemporaryRequestKey - requestPubKey will be marked as 'temporary' (only used for Copay migration)
  */
 WalletService.prototype.joinWallet = function(opts, cb) {
   var self = this;
@@ -218,6 +294,7 @@ WalletService.prototype.joinWallet = function(opts, cb) {
 
   Utils.runLocked(opts.walletId, cb, function(cb) {
     self.storage.fetchWallet(opts.walletId, function(err, wallet) {
+
       if (err) return cb(err);
       if (!wallet) return cb(new ClientError('Wallet not found'));
 
@@ -239,6 +316,7 @@ WalletService.prototype.joinWallet = function(opts, cb) {
         xPubKey: opts.xPubKey,
         requestPubKey: opts.requestPubKey,
         signature: opts.copayerSignature,
+        isTemporaryRequestKey: !!opts.isTemporaryRequestKey,
       });
 
       self.storage.fetchCopayerLookup(copayer.id, function(err, res) {
diff --git a/package.json b/package.json
index 93d5b1d..1aa796c 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "bitcore-wallet-service",
   "description": "A service for Mutisig HD Bitcoin Wallets",
   "author": "BitPay Inc",
-  "version": "0.0.17",
+  "version": "0.0.18",
   "keywords": [
     "bitcoin",
     "copay",
diff --git a/test/integration/server.js b/test/integration/server.js
index ed74cd9..a5558b6 100644
--- a/test/integration/server.js
+++ b/test/integration/server.js
@@ -299,6 +299,43 @@ describe('Wallet service', function() {
       });
     });
 
+
+    it('should create  wallet with given id', function(done) {
+      var opts = {
+        name: 'my wallet',
+        m: 2,
+        n: 3,
+        pubKey: TestData.keyPair.pub,
+        id: '1234',
+      };
+      server.createWallet(opts, function(err, walletId) {
+        should.not.exist(err);
+        server.storage.fetchWallet('1234', function(err, wallet) {
+          should.not.exist(err);
+          wallet.id.should.equal(walletId);
+          wallet.name.should.equal('my wallet');
+          done();
+        });
+      });
+    });
+
+    it('should fail to create wallets with same id', function(done) {
+      var opts = {
+        name: 'my wallet',
+        m: 2,
+        n: 3,
+        pubKey: TestData.keyPair.pub,
+        id: '1234',
+      };
+      server.createWallet(opts, function(err, walletId) {
+        server.createWallet(opts, function(err, walletId) {
+          err.message.should.contain('Wallet already exists');
+          done();
+        });
+      });
+    });
+
+
     it('should fail to create wallet with no name', function(done) {
       var opts = {
         name: '',
@@ -2595,6 +2632,207 @@ describe('Wallet service', function() {
       });
     });
     it.skip('should abort scan if there is an error checking address activity', function(done) {});
+
+  });
+
+
+  describe('#replaceTemporaryRequestKey', function() {
+    var server, walletId;
+    beforeEach(function(done) {
+      server = new WalletService();
+      var walletOpts = {
+        name: 'my wallet',
+        m: 2,
+        n: 2,
+        pubKey: TestData.keyPair.pub,
+      };
+      server.createWallet(walletOpts, function(err, wId) {
+        should.not.exist(err);
+        should.exist.walletId;
+        walletId = wId;
+        done();
+      });
+    });
+
+    it('should join existing wallet with temporaryRequestKey', function(done) {
+      var copayerOpts = helpers.getSignedCopayerOpts({
+        walletId: walletId,
+        name: 'me',
+        xPubKey: TestData.copayers[0].xPubKey_45H,
+        requestPubKey: TestData.copayers[0].pubKey_1H_0,
+      });
+      copayerOpts.isTemporaryRequestKey = true;
+
+      server.joinWallet(copayerOpts, function(err, result) {
+        should.not.exist(err);
+        var copayerId = result.copayerId;
+        helpers.getAuthServer(copayerId, function(server) {
+          server.getWallet({}, function(err, wallet) {
+            wallet.id.should.equal(walletId);
+            var copayer = wallet.copayers[0];
+            copayer.isTemporaryRequestKey.should.equal(true);
+            done();
+          });
+        });
+      });
+    });
+
+    it('should fail to replace a temporaryRequestKey on a not-complete wallet', function(done) {
+      var copayerOpts = helpers.getSignedCopayerOpts({
+        walletId: walletId,
+        name: 'me',
+        xPubKey: TestData.copayers[0].xPubKey_45H,
+        requestPubKey: TestData.copayers[0].pubKey_1_0,
+      });
+      copayerOpts.isTemporaryRequestKey = true;
+
+      server.joinWallet(copayerOpts, function(err, result) {
+        should.not.exist(err);
+        var copayerId = result.copayerId;
+        helpers.getAuthServer(copayerId, function(server) {
+          server.getWallet({}, function(err, wallet) {
+
+            var copayerOpts = helpers.getSignedCopayerOpts({
+              walletId: walletId,
+              name: 'me',
+              xPubKey: TestData.copayers[0].xPubKey_45H,
+              requestPubKey: TestData.copayers[0].pubKey_1H_0,
+            });
+            copayerOpts.isTemporaryRequestKey = false;
+            server.replaceTemporaryRequestKey(copayerOpts, function(err, wallet) {
+              err.code.should.equal('WNOTFULL');
+              done();
+            });
+          });
+        });
+      });
+    });
+
+
+    it('should fail to replace a temporaryRequestKey is Copayer is not in wallet', function(done) {
+      var copayerOpts = helpers.getSignedCopayerOpts({
+        walletId: walletId,
+        name: 'me',
+        xPubKey: TestData.copayers[0].xPubKey_45H,
+        requestPubKey: TestData.copayers[0].pubKey_1_0,
+      });
+      copayerOpts.isTemporaryRequestKey = true;
+
+      server.joinWallet(copayerOpts, function(err, result) {
+        should.not.exist(err);
+        var copayerId = result.copayerId;
+        helpers.getAuthServer(copayerId, function(server) {
+          server.getWallet({}, function(err, wallet) {
+
+            var copayerOpts = helpers.getSignedCopayerOpts({
+              walletId: walletId,
+              name: 'me',
+              xPubKey: TestData.copayers[1].xPubKey_45H,
+              requestPubKey: TestData.copayers[1].pubKey_1H_0,
+            });
+            copayerOpts.isTemporaryRequestKey = false;
+            server.replaceTemporaryRequestKey(copayerOpts, function(err, wallet) {
+              err.code.should.equal('CDATAMISMATCH');
+              done();
+            });
+          });
+        });
+      });
+    });
+
+    it('should fail replace a temporaryRequestKey with invalid copayer', function(done) {
+      var copayerOpts = helpers.getSignedCopayerOpts({
+        walletId: walletId,
+        name: 'me',
+        xPubKey: TestData.copayers[0].xPubKey_45H,
+        requestPubKey: TestData.copayers[0].pubKey_1_0,
+      });
+      copayerOpts.isTemporaryRequestKey = true;
+
+      server.joinWallet(copayerOpts, function(err, result) {
+        should.not.exist(err);
+
+        var copayerOpts2 = helpers.getSignedCopayerOpts({
+          walletId: walletId,
+          name: 'me',
+          xPubKey: TestData.copayers[1].xPubKey_45H,
+          requestPubKey: TestData.copayers[1].pubKey_1H_0,
+        });
+        copayerOpts2.isTemporaryRequestKey = false;
+
+        server.joinWallet(copayerOpts2, function(err, result) {
+          should.not.exist(err);
+
+          var copayerId = result.copayerId;
+          helpers.getAuthServer(copayerId, function(server) {
+            server.getWallet({}, function(err, wallet) {
+
+              var copayerOpts = helpers.getSignedCopayerOpts({
+                walletId: walletId,
+                name: 'me',
+                xPubKey: TestData.copayers[1].xPubKey_45H,
+                requestPubKey: TestData.copayers[1].pubKey_1H_0,
+              });
+              copayerOpts.isTemporaryRequestKey = false;
+              server.replaceTemporaryRequestKey(copayerOpts, function(err, wallet) {
+                err.code.should.equal('CDATAMISMATCH');
+                done();
+              });
+            });
+          });
+        });
+      });
+    });
+
+    it('should replace a temporaryRequestKey', function(done) {
+      var copayerOpts = helpers.getSignedCopayerOpts({
+        walletId: walletId,
+        name: 'me',
+        xPubKey: TestData.copayers[0].xPubKey_45H,
+        requestPubKey: TestData.copayers[0].pubKey_1_0,
+      });
+      copayerOpts.isTemporaryRequestKey = true;
+
+      server.joinWallet(copayerOpts, function(err, result) {
+        should.not.exist(err);
+        var copayerId = result.copayerId;
+
+        var copayerOpts2 = helpers.getSignedCopayerOpts({
+          walletId: walletId,
+          name: 'me',
+          xPubKey: TestData.copayers[1].xPubKey_45H,
+          requestPubKey: TestData.copayers[1].pubKey_1H_0,
+        });
+        copayerOpts2.isTemporaryRequestKey = false;
+
+        server.joinWallet(copayerOpts2, function(err, result) {
+          should.not.exist(err);
+          var copayerId2 = result.copayerId;
+
+
+          helpers.getAuthServer(copayerId, function(server) {
+            server.getWallet({}, function(err, wallet) {
+
+              var copayerOpts = helpers.getSignedCopayerOpts({
+                walletId: walletId,
+                name: 'me',
+                xPubKey: TestData.copayers[0].xPubKey_45H,
+                requestPubKey: TestData.copayers[0].pubKey_1H_0,
+              });
+              copayerOpts.isTemporaryRequestKey = false;
+              server.replaceTemporaryRequestKey(copayerOpts, function(err, wallet) {
+                should.not.exist(err);
+                server.getWallet({}, function(err, wallet) {
+                  wallet.copayers[0].isTemporaryRequestKey.should.equal(false);
+                  wallet.copayers[1].isTemporaryRequestKey.should.equal(false);
+                  done();
+                });
+              });
+            });
+          });
+        });
+      });
+    });
   });
 });
 
diff --git a/test/testdata.js b/test/testdata.js
index ca9a279..8fc9fb8 100644
--- a/test/testdata.js
+++ b/test/testdata.js
@@ -17,7 +17,9 @@ var copayers = [{
   xPrivKey_1H: 'xprv9uZiJ2ZYFNQ1WeKrKfTxrbUnXfNnCtpbdHVuUMSVGB57nhbmjqWbJBQbgGNa2jSbrgQX9NFHXtAoQ3y1hsEgwjKHxUU52ZYTC6m5kjXoNpJ',
   xPubKey_1H: 'xpub68Z4hY6S5jxJj8QKRgzyDjRX5hDGcMYSzWRWGjr6pWc6fVvvHNpqqyj5XXbMcfW737beYZcd7EQau5HS74Ws6Ctx9XwFn2wHQjSUKLbfdFk',
   privKey_1H_0: 'e334a0ce3d573bd99fc4cd7e2065e39dc7851cb61da7f381431c253c3e230828',
-  pubKey_1H_0: '02db35c363e2c904bba3cd0eadb6b8d68fc1d8e6160d632b8fb91a471b80e40c86'
+  pubKey_1H_0: '02db35c363e2c904bba3cd0eadb6b8d68fc1d8e6160d632b8fb91a471b80e40c86',
+  privKey_1_0: '89833f39998ff14f2cbb461365ccba30583abfd2a7845e0bb61849275802005d',
+  pubKey_1_0: '022ef899f914c9b90a5544923a3aa6de5ddcd6c9d0b603b63ab9fd0c2cdc5d3772',
 }, {
   id: 'cf652642ebf997460d642231f9929c39257bcd4c42e9ecb312c226961e21c882',
   xPrivKey: 'xprv9s21ZrQH143K2XtR13LpXVAPaGTFsPY5dJfNvNTShfhdVW16vdDaYGjLwHmyKLCtv3F6h9NpKsAGusmKCZNQvKcYqYf9MjCLwJwsoEyAuge',