@lordjohn08 workaround is not needed for this game, so i have the the witcher 3 wild hunt game of the year edition on my PS4 and i download the main game and Hearts of Stone DLC complete PC save from this link (Blood and Wine ready) or u can download some other saves from here.
1- downloaded the PC save and rename ManualSave.0.sav to AutoSave.0.sav
2- use ftp to replace the mounted file with the downloaded one
that's all to it
thanks for letting me know, i don't have the privilege to edit old post so i can fix the broken link, but i can try to ask PSXHAX staff, btw you can find all the saves i have posted here also in the ps4 game modding community discord channel.