         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()

    replaceModel: (usModel) ->
        if (!usModel.swimlane)
            usModel.swimlane = -1

        @.userstoriesRaw = _.map @.userstoriesRaw, (usItem) ->
            if usModel.id == usItem.id

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

        @.refreshRawOrder()
