Hey,
I've done a pre-facelift swap to a facelift one. The problems you could face are the wiring looms. You will need the DVD-ROM Sat unit. Which is not just a DVD reader, but the Navigation "brain". So you will need the loom between the DVD_ROM and the Touchscreen display. The other harnesses should be the same. You need the GPS antenna too. Any further information could be provided, if you apply some pictures if you already disassembled something.
Cheers!