PS4 Save Data not appearing after transfer to PS5

Just got a brand new PS5 Slim, and after transferring my save data from my PS4, it doesn't seem to be appearing ingame. I'm specific encountering this problem on Red Dead Redemption 2. I have the only version of the game (PS4 Edition), and it says the files are on the PS5. When I go to load them, it says that there are no save files to load. Would anyone happen to know a solution? Many thanks.