Back up all your games to ext. drive. Then delete all Backup managers. If one gives you trouble and says corrupt file, back up ps3's data on external and restore ps3 to factory settings.
Then, chose your manager, 's of chose and reinstall them. I recommend using only one or two, either multimanager v10 w/covers, or OPM v2.1 D<-----, I have had a 98 percent success rate with these, on many different combination's of Jailbreaking devices and payloads.
Your games, as long as they remain in there assigned folder, they will be noticeable, If you were using 3 different managers and have 3 different game folders, merge the games to the appropriate game file for the manager in use, or reinstall your previous managers. GOOD LUCK, and I hope this helps.
If you feel I deserve it please +rep me, THX