A safe Borderlands 3 backup includes every numbered .sav plus profile.sav from the active account directory. Character-only copies can miss shared unlocks and profile state.
For this PC reference, the documented storage is Windows: %USERPROFILE%DocumentsMy GamesBorderlands 3SavedSaveGames<account-id>. The known file or folder pattern is numbered character .sav files and profile.sav. Borderlands 3 stores per-character saves alongside profile.sav, which contains profile-level state. Treat the account directory as a unit and do not infer interchangeability with Borderlands 2.
Backup guidance: Close Borderlands 3, let the launcher finish any synchronization, then copy the complete documented save directory to a dated folder outside the live path. Preserve companion files rather than selecting only the newest-looking record. Steam and Epic cloud can synchronize the same Documents-area data under their account context. Launcher and cloud context matters because The active Steam, Epic Games Store installation determines which local profile and cloud copy can overwrite the save. Identify the storefront and account before restoring files.
Compatibility and recovery should stay conservative. Treat saves as version-, storefront-, account-, and mod-sensitive unless the game or a separately verified migration workflow proves otherwise. A similar filename or extension is not evidence that two releases are interchangeable. If the expected progress is not visible, If progress is missing after a restore, confirm the active Windows account, storefront/profile, cloud state, and exact directory first. Restore the untouched backup before experimenting with individual files or older autosaves. SaveEditor.com only labels a game-specific editor as available when a separate linked Tool has a verified operational runtime; this reference page by itself is not an editor claim.