The HD Remaster is one PC product but it contains several distinct save contexts, so backing up only the first save-looking file is risky. Steam places the collection under one Documents root; Microsoft Store uses WGS. SaveEditor recommends preserving the collection root and labeling the backup with which component game and slot were active. That matters when troubleshooting because Final Fantasy X, X-2, and Last Mission can each have their own progress while sharing the same installation and launcher.
Choose the correct backup boundary
For Final Fantasy X/X-2 HD Remaster, the researched PC save location is Windows: Steam: %USERPROFILE%DocumentsSQUARE ENIXFINAL FANTASY X&X-2 HD Remaster ; Microsoft Store: %LOCALAPPDATA%Packages39EA002F.FFXX-2HDRemaster_n746a19ndrrjgSystemAppDatawgs 009000000B904E5_0000000000000000000000006038DDC9<container>. The known save file or folder pattern is Separate game-specific save data exists beneath the remaster root for Final Fantasy X, X-2, and Last Mission.. Copy the whole FINAL FANTASY X&X-2 HD Remaster directory on Steam so all game-specific subfolders and system data remain together. For WGS, preserve the complete container tree. Copying the complete documented save boundary is safer than selecting one visually obvious file, because companion metadata, indexes, backups, or multiple slots can be required together.
Make an offline copy before changing anything
Close the game first, wait for the active launcher to finish writing, then copy the save data to a separate folder that the game and sync client do not watch. Label the copy with the game, storefront, profile, and date. Documented launcher context: Steam, Microsoft Store. Do not assume a save from FFX belongs in the same subfolder as X-2 or Last Mission. Microsoft Store container names are not user-friendly filenames.
Account for cloud saves
Steam Cloud and Xbox Cloud are documented; OneDrive can also synchronize the Documents root when enabled. Before restoring an older backup, decide which copy should win. If the game or launcher starts while an older manual copy is in place, synchronization can replace it before you confirm that it works. Keep the untouched backup outside the live save path until the restored progress has been opened and saved normally.
Restore without changing format assumptions
The collection contains multiple games under one product. Steam uses the Documents tree while Microsoft Store uses a WGS container. Steam Cloud quotas are tracked separately for FFX, X-2, and Last Mission. Compatibility note: A backup for one title in the collection should not overwrite another title’s data. Steam and Microsoft Store use different storage containers even when the underlying game progress is related. Restore into the matching storefront/profile context whenever possible. Do not rename a save extension, move a folder into a different container type, or assume a console/mobile copy is equivalent unless a tested migration path specifically says so.
Recovery fallback
If a save appears absent, confirm whether you launched X, X-2, or Last Mission and whether OneDrive/Steam Cloud restored a different Documents copy. Microsoft Store users should verify the correct WGS account container. If the restored copy fails, put the untouched original back first. Then compare location, account/profile, cloud state, and the full directory structure before trying a different backup. The objective is reversible recovery, not repeated destructive experiments on the only copy.
Verification context: Reviewed against current PCGamingWiki Final Fantasy X/X-2 HD Remaster save-location and cloud documentation.