Okay guys, I tried several ways to overwrite the save and here’s what worked:
1. Go to any save bot manager on Discord.
2. Select the resign function and add the two files:
restorePoints2
restorePoints2.bin
3. If you haven’t transferred the save to a USB drive yet, do it now.
4. Delete 4 files:
the two you already resigned with save bot (restorePoints2, restorePoints2.bin)
sce_sdmemory
sce_sdmemory.bin
(also delete everything from the console)
5. Upload to the console the files restorePoints2 and restorePoints2.bin that you created with the save bot manager.
6. After that, overwrite the files save2 and save2.bin.
7. Upload all of them to the console together.
The files sce_sdmemory and sce_sdmemory.bin are not needed — delete them from both the console and the USB drive
Also, you don’t need to delete saves from the PS5 version of the game your save slot will not be corrupted with this method and will transfer perfectly into the second slot.