Unless I am missing something I thought that the following clarified the question although admittedly I hadn't read the original question in the context of receiving the amended clearance on the ground..
'When an amendment is made to a clearance, the new clearance must be given in full to the pilot by the air traffic controller, and this new clearance automatically cancels any previous clearance.Thus, when an air traffic controller issues a clearance, which amends the route or vertical profile of an aircraft on a SID, e.g. 'climb FL 120', this automatically cancels the vertical profile of the SID. If the profile contains a restriction which provides vertical separation from conflicting traffic on another SID, air traffic controllers must reiterate the restriction, e.g. 'climb FL120, cross XYZ 5000 feet or above'. Similarly, when air traffic controllers issue instructions which amend the SID route, they are to confirm the level profile to be followed e.g. 'fly heading 095, climb FL 80' or 'route direct to ABC, stop climb at altitude 5000 feet'.