I know DTG has problems with some of the transfer over. Have they resolved the issues yet around the transfer of game achievements in particular levels?. I had got to level 230 ish on the PS4 but had to level up again on the PS5.
It’s a work in progress and covered on the roadmap. Might be some news next week on the stream which is now a Q&A where the game is at. I flick between the two versions at present myself. 4 to complete some route tasks or trophy’s etc 5 to enjoy the enhanced graphics and layers too (oh and the loading time!)
If you have both PS4 and PS5 versions installed on the PS5, both will appear as separate games on your home screen so you can just choose the one you want to play. Before the last software update (not the one today), you had to highlight the game and press the options button and then scroll down to the bottom to select the game version (PS4/PS5).
what Nick Y said or… if you don’t have both just look up the missing version in the store and download again. And any DLC you may want. Im playing on my series S just to confuse you now