     replaceModel: (usModel) ->
         if (!usModel.swimlane)
             usModel.swimlane = -1
+            # To prevent wrong updates in any (put/patch/post) api call
+            delete usModel._modifiedAttrs.swimlane
 
         @.userstoriesRaw = _.map @.userstoriesRaw, (usItem) ->
             if usModel.id == usItem.id

        @.userstoriesRaw = @.userstoriesRaw.map (us) =>
            if (!us.swimlane)
                us.swimlane = -1
            return us

        @.refreshRawOrder()

        userstories.forEach (us) =>
            if (!us.swimlane)
                us.swimlane = -1
                # To prevent wrong updates in any (put/patch/post) api call
                delete us._modifiedAttrs.swimlane

        @.userstoriesRaw = userstories
        @.refreshRawOrder()
        @.refresh()
