Is there a way to only restore this one savefile without restoring everything else (savefiles from other games that are now Very Very outdated).
Old save is not a problem — you can copy save files back to console. The database file (savedata.db) may be the problem, because it has to contain entry (detailed information) for every save, that game creates. But if you have the old savedata.db and you didn't reinitialize your PS4 (it changes user ID) this should work:
1. Run game and create new save file (there are 4 files actually for this game)
2. Make backup of new saves and current savedata.db
2. Copy old save back to your PS4 and replace the one you just created (all files!)
3. Copy new savedata.db from USB stick to your PC and open it with SQLite Database Browser
4. Go to Browse data and look for GoW save entry. For my version of game there is only one entry of CUSA07412
5. You can see there are few colums like title id, file size etc. There is also mtime which is your goal. You have to replace new date with the one from your older savedata.db
6. Double check if there is difference in other columns. If there is any just edit it and replace with the old value.
7. Copy this modified savedata.db to your PS4 and replace it
There is pretty good chance that this will work. Please let me know and remember to have copy! I'm not responsible for any problems that this operation may cause.
