@if2011 I can confirm that some players have experienced issues with the trophies not unlocking on another platform when loading a save that has already unlocked them, this has been reported and is being investigated.
Most trophies will not retroactively unlock and will require an action to unlock them, mainly completing a main quest or side quest will do this.
If you have an older save you can load that still has a main quest or side quest to complete then hopefully that will work, however if you encounter any issues please let us know.