No option with the PS5 disc to download the PS4 version to transfer my save... Ps4 disc sold last year

How do Gearbox expect people to be able to transfer their PS4 save file to the PS5 when the ultimate edition on PS5 does not give you the option to download the PS4 version, do I have to buy a PS4 disc?

I sold my PS4 disc version over a year ago after completing the main campaign and bought the PS5 exclusive ultimate edition… But the PS5 disc, does not give you the option to download the PS4 version to upload my save file… I do not want to restart the game or buy a PS4 version… No doubt I’m stuck… Or is there a method?

This is partly a consequence of changes to the save system Sony made between PS4 and PS5 (Xbox doesn’t need the upload/download between XB1 and XBSX, for example) and Sony’s DRM system.

You may just need to grab a copy of a used PS4 disk to get the files transferred (which you could then sell again.)

(And moving to PS tech support)