Well I will let PPRuNe Radar come back with his response for your specific question but my take on the subject in general is as follows...
Because the pilots are questioning if relative restrictions still apply to new clearances, if there is a chance of either mis-understanding or assumption on the part of the pilot, then the controller should re-state that the restriction still applies, if that restriction is still what the controller wants, or say that the restriction is lifted if the controller does not require it anymore.
Also if the pilot is in doubt and the controller has not made it clear, then the pilot should ask for clarification.
As we all know, we all have to go above and beyond the required procedures on occasion, so to save the necks of all concerned, make it crystal clear what you want.