diff --git a/services/web/app/coffee/Features/Project/ProjectController.coffee b/services/web/app/coffee/Features/Project/ProjectController.coffee
index 359d0ddeb4..2079c762b4 100644
--- a/services/web/app/coffee/Features/Project/ProjectController.coffee
+++ b/services/web/app/coffee/Features/Project/ProjectController.coffee
@@ -157,7 +157,7 @@ module.exports = ProjectController =
 			hasSubscription: (cb)->
 				LimitationsManager.userHasSubscriptionOrIsGroupMember currentUser, cb
 			user: (cb) ->
-				User.findById user_id, "featureSwitches", cb
+				User.findById user_id, "featureSwitches overleaf", cb
 			}, (err, results)->
 				if err?
 					logger.err err:err, "error getting data for project list page"
diff --git a/services/web/app/coffee/infrastructure/ExpressLocals.coffee b/services/web/app/coffee/infrastructure/ExpressLocals.coffee
index dcacf17033..1237a6ceb6 100644
--- a/services/web/app/coffee/infrastructure/ExpressLocals.coffee
+++ b/services/web/app/coffee/infrastructure/ExpressLocals.coffee
@@ -93,6 +93,10 @@ module.exports = (app, webRouter, privateApiRouter, publicApiRouter)->
 		req.externalAuthenticationSystemUsed = Features.externalAuthenticationSystemUsed
 		res.locals.externalAuthenticationSystemUsed = Features.externalAuthenticationSystemUsed
 		req.hasFeature = res.locals.hasFeature = Features.hasFeature
+		res.locals.userIsFromOLv1 = (user) ->
+			user.overleaf?.id?
+		res.locals.userIsFromSL = (user) ->
+			!user.overleaf?.id?
 		next()
 
 	webRouter.use (req, res, next)->
diff --git a/services/web/app/coffee/infrastructure/Features.coffee b/services/web/app/coffee/infrastructure/Features.coffee
index 7047826bbb..a49e0ec124 100644
--- a/services/web/app/coffee/infrastructure/Features.coffee
+++ b/services/web/app/coffee/infrastructure/Features.coffee
@@ -12,5 +12,7 @@ module.exports = Features =
 				return not Features.externalAuthenticationSystemUsed()
 			when 'github-sync'
 				return Settings.enableGithubSync
+			when 'v1-return-message'
+				return Settings.accountMerge? and Settings.overleaf?
 			else
 				throw new Error("unknown feature: #{feature}")
diff --git a/services/web/app/views/project/list.pug b/services/web/app/views/project/list.pug
index c5defbe1c5..dc5f2c16b2 100644
--- a/services/web/app/views/project/list.pug
+++ b/services/web/app/views/project/list.pug
@@ -64,13 +64,18 @@ block content
 					aside.project-list-sidebar.col-md-2.col-xs-3
 						include ./list/side-bar
 
-					if isShowingV1Projects && settings.overleaf && settings.overleaf.host
+					if hasFeature('v1-return-message')
 						.project-list-sidebar-v2-pane.col-md-2.col-xs-3
 							span Welcome to the Overleaf v2 alpha! #[a(href="https://www.overleaf.com/help/342-overleaf-v2-faq") Find out more].
-							span To tag or rename your v1 projects, please go back to Overleaf v1.
-							a.project-list-sidebar-v1-link(
-								href=settings.overleaf.host + "/dash?prefer-v1-dash=1"
-							) Go back to v1
+							if userIsFromOLv1(user)
+								span To tag or rename your v1 projects, please go back to Overleaf v1.
+								a.project-list-sidebar-v1-link(
+									href=settings.overleaf.host + "/dash?prefer-v1-dash=1"
+								) Go back to v1
+							if userIsFromSL(user)
+								a.project-list-sidebar-v1-link(
+									href=settings.accountMerge.sharelatexHost
+								) Go back to ShareLaTeX
 
 					.project-list-main.col-md-10.col-xs-9
 						include ./list/notifications
diff --git a/services/web/test/acceptance/coffee/helpers/User.coffee b/services/web/test/acceptance/coffee/helpers/User.coffee
index ad728fb263..7d8e9086d4 100644
--- a/services/web/test/acceptance/coffee/helpers/User.coffee
+++ b/services/web/test/acceptance/coffee/helpers/User.coffee
@@ -18,22 +18,27 @@ class User
 		})
 
 	login: (callback = (error) ->) ->
-		@getCsrfToken (error) =>
+		@ensureUserExists (error) =>
 			return callback(error) if error?
-			filter = {@email}
-			options = {upsert: true, new: true, setDefaultsOnInsert: true}
-			UserModel.findOneAndUpdate filter, {}, options, (error, user) =>
+			@getCsrfToken (error) =>
 				return callback(error) if error?
-				AuthenticationManager.setUserPassword user._id, @password, (error) =>
-					return callback(error) if error?
-					@id = user?._id?.toString()
-					@_id = user?._id?.toString()
-					@first_name = user?.first_name
-					@referal_id = user?.referal_id
-					@request.post {
-						url: "/login"
-						json: { @email, @password }
-					}, callback
+				@request.post {
+					url: "/login"
+					json: { @email, @password }
+				}, callback
+
+	ensureUserExists: (callback = (error) ->) ->
+		filter = {@email}
+		options = {upsert: true, new: true, setDefaultsOnInsert: true}
+		UserModel.findOneAndUpdate filter, {}, options, (error, user) =>
+			return callback(error) if error?
+			AuthenticationManager.setUserPassword user._id, @password, (error) =>
+				return callback(error) if error?
+				@id = user?._id?.toString()
+				@_id = user?._id?.toString()
+				@first_name = user?.first_name
+				@referal_id = user?.referal_id
+				callback(null, @password)
 
 	logout: (callback = (error) ->) ->
 		@getCsrfToken (error) =>
@@ -212,6 +217,14 @@ class User
 				return callback(error) if error?
 				callback(null, response.statusCode)
 
-
+	isLoggedIn: (callback = (error, loggedIn) ->) ->
+		@request.get "/user/personal_info", (error, response, body) ->
+			return callback(error) if error?
+			if response.statusCode == 200
+				return callback(null, true)
+			else if response.statusCode == 302
+				return callback(null, false)
+			else
+				return callback(new Error("unexpected status code from /user/personal_info: #{response.statusCode}"))
 
 module.exports = User