diff --git a/common/mixins/switch-datasource-mixin.js b/common/mixins/switch-datasource-mixin.js
index 206d066..06b098e 100644
--- a/common/mixins/switch-datasource-mixin.js
+++ b/common/mixins/switch-datasource-mixin.js
@@ -14,6 +14,7 @@
 var logger = require('oe-logger');
 var log = logger('switch-datasource-mixin');
 var appinstance = require('../../server/server.js').app;
+var versionMixin = require('./version-mixin.js');
 
 function getScopeMatchedDS(model, list, scope) {
   var matchedds;
@@ -225,6 +226,9 @@ module.exports = function SwitchDatasourceMixin(model) {
         if (ds) {
           // console.log('switch datasource ', modelName, ds.settings.name);
           model.attachTo(ds);
+          if (model.settings.mixins.VersionMixin) {
+            model.switchVersion = versionMixin.switchVersion;
+          }
           return ds;
         }
       }
diff --git a/common/mixins/version-mixin.js b/common/mixins/version-mixin.js
index 7c2966b..be690b5 100644
--- a/common/mixins/version-mixin.js
+++ b/common/mixins/version-mixin.js
@@ -20,6 +20,59 @@
 
 var uuidv4 = require('uuid/v4');
 
+function versionMixinBeforeSave(ctx, next) {
+  // if (Model.modelName !== ctx.Model.modelName) {
+  //     return next();
+  // }
+  var data = ctx.data || ctx.instance;
+  var error;
+  if (ctx.isNewInstance) {
+    data._version = data._newVersion || data._version || uuidv4();
+    delete data._oldVersion;
+    delete data._newVersion;
+  } else if (ctx.currentInstance) {
+    if (ctx.currentInstance.__remoteInvoked) {
+      if (!data._version) {
+        error = new Error();
+        error.name = 'Data Error';
+        error.message = 'current version must be specified in _version field';
+        error.code = 'DATA_ERROR_071';
+        error.type = 'DataModifiedError';
+        error.retriable = false;
+        error.status = 422;
+        return next(error);
+      }
+    }
+    var version = data._version || ctx.currentInstance._version;
+    if (data._newVersion && data._newVersion === version) {
+      error = new Error();
+      error.name = 'Data Error';
+      error.message = 'current version and new version must be different';
+      error.code = 'DATA_ERROR_071';
+      error.type = 'DataModifiedError';
+      error.retriable = false;
+      error.status = 422;
+      return next(error);
+    }
+    if (version.toString() !== ctx.currentInstance._version.toString()) {
+      error = new Error();
+      error.name = 'Data Error';
+      error.message = 'No record with version specified';
+      error.code = 'DATA_ERROR_071';
+      error.type = 'DataModifiedError';
+      error.retriable = false;
+      error.status = 422;
+      return next(error);
+    }
+    data._oldVersion = version;
+    data._version = data._newVersion || uuidv4();
+    delete data._newVersion;
+  }
+  // TODO replaceById will have ctx.instance, and not
+  // ctx.currentinstance, need to analyze that
+  next();
+};
+
 module.exports = function VersionMixin(Model) {
   if (Model.modelName === 'BaseEntity') {
     return;
@@ -56,58 +109,7 @@ module.exports = function VersionMixin(Model) {
     next();
   });
 
-  Model.switchVersion = function versionMixinBeforeSave(ctx, next) {
-    // if (Model.modelName !== ctx.Model.modelName) {
-    //     return next();
-    // }
-    var data = ctx.data || ctx.instance;
-    var error;
-    if (ctx.isNewInstance) {
-      data._version = data._newVersion || data._version || uuidv4();
-      delete data._oldVersion;
-      delete data._newVersion;
-    } else if (ctx.currentInstance) {
-      if (ctx.currentInstance.__remoteInvoked) {
-        if (!data._version) {
-          error = new Error();
-          error.name = 'Data Error';
-          error.message = 'current version must be specified in _version field';
-          error.code = 'DATA_ERROR_071';
-          error.type = 'DataModifiedError';
-          error.retriable = false;
-          error.status = 422;
-          return next(error);
-        }
-      }
-      var version = data._version || ctx.currentInstance._version;
-      if (data._newVersion && data._newVersion === version) {
-        error = new Error();
-        error.name = 'Data Error';
-        error.message = 'current version and new version must be different';
-        error.code = 'DATA_ERROR_071';
-        error.type = 'DataModifiedError';
-        error.retriable = false;
-        error.status = 422;
-        return next(error);
-      }
-      if (version.toString() !== ctx.currentInstance._version.toString()) {
-        error = new Error();
-        error.name = 'Data Error';
-        error.message = 'No record with version specified';
-        error.code = 'DATA_ERROR_071';
-        error.type = 'DataModifiedError';
-        error.retriable = false;
-        error.status = 422;
-        return next(error);
-      }
-      data._oldVersion = version;
-      data._version = data._newVersion || uuidv4();
-      delete data._newVersion;
-    }
-    // TODO replaceById will have ctx.instance, and not
-    // ctx.currentinstance, need to analyze that
-    next();
-  };
+  Model.switchVersion = versionMixinBeforeSave;
 
   // lock current _version
   Model.evObserve('persist', function versionMixinPersistsFn(ctx, next) {
@@ -143,3 +145,5 @@ module.exports = function VersionMixin(Model) {
     }
   });
 };
+
+module.exports.switchVersion = versionMixinBeforeSave;
\ No newline at end of file
diff --git a/package.json b/package.json
index a961d31..a22c5ab 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "oe-cloud",
-    "version": "1.7.0",
+    "version": "1.7.1",
     "main": "server/server.js",
     "engines": {
         "node": ">=6.9.0"
diff --git a/server/boot/createAppUser.js b/server/boot/createAppUser.js
deleted file mode 100644
index 88c3a6e..0000000
--- a/server/boot/createAppUser.js
+++ /dev/null
@@ -1,66 +0,0 @@
-
-/**
- *
- * �2016-2017 EdgeVerve Systems Limited (a fully owned Infosys subsidiary),
- * Bangalore, India. All Rights Reserved.
- *
- */
-var loopback = require('loopback');
-var async = require('async');
-var log = require('oe-logger')('create-Service-User');
-var app = require('../server').app;
-var uuidv4 = require('uuid/v4');
-
-var serviceName = app.get('app');
-var serviceUser = {
-  username: serviceName,
-  email: serviceName + '@oecloud.com',
-  id: serviceName,
-  password: uuidv4()
-};
-
-log.debug(log.defaultContext(), 'creating service user: ', serviceUser);
-module.exports = function createAdminUser(app, done) {
-  var adminUserContext = {
-    ctx: {
-      tenantId: 'default',
-      remoteUser: 'system'
-    }
-  };
-
-  async.series([function serviceUserCreate(cb) {
-    var BaseUser = loopback.getModelByType('BaseUser');
-    BaseUser.findOrCreate(serviceUser, adminUserContext, function baseUserCreate(err, res) {
-      if (err) {
-        log.error(log.defaultContext(), 'error in service user: ', err);
-        if (err.code === 11000) {
-          return cb();
-        }
-        cb(err);
-      } else {
-        log.debug(log.defaultContext(), 'created service user: ', res);
-        cb();
-      }
-    });
-  }, function roleMappingOp(cb) {
-    var RoleMapping = loopback.getModelByType('BaseRoleMapping');
-    RoleMapping.findOrCreate({
-      id: serviceName,
-      principalType: 'USER',
-      principalId: serviceName,
-      roleId: 'admin'
-    }, adminUserContext, function roleMapppingCreate(err, res) {
-      if (err) {
-        if (err.code === 11000) {
-          return cb();
-        }
-        cb(err);
-      } else {
-        cb();
-      }
-    });
-  }],
-  function finalCallback() {
-    done();
-  });
-};