It makes sense for CX to have the A350 CCQ and MFF.
I am fairly certain that they will be approaching the HKCAD for approvals. The final approval will lie with the CAD.
If the answer is yes, then everyone on the Airbus will be happy for obvious reasons!
If the answer is no, the conversion course will be a quick CCQ, but there will be no MFF. In this case, the A350 will become an Airbus "Senior Fleet".