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.
Where Final Fantasy X/X-2 HD Remaster stores PC saves
The researched save-location boundary is Windows: Steam: %USERPROFILE%DocumentsSQUARE ENIXFINAL FANTASY X&X-2 HD Remaster ; Microsoft Store: %LOCALAPPDATA%Packages39EA002F.FFXX-2HDRemaster_n746a19ndrrjgSystemAppDatawgs 009000000B904E5_0000000000000000000000006038DDC9<container>. The known file or folder pattern is Separate game-specific save data exists beneath the remaster root for Final Fantasy X, X-2, and Last Mission.. This is the practical starting point because launcher, profile, and storefront context can change which copy is active even when two folders look similar.
Storefront and profile differences
Documented launchers or storefronts: 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. When looking for a missing save, identify the executable/storefront you actually launched and the user/profile that created the progress before copying anything between directories.
Cloud synchronization
Steam Cloud and Xbox Cloud are documented; OneDrive can also synchronize the Documents root when enabled. A cloud service should be treated as another copy of the save, not as proof that the local folder is disposable. Before a manual restore, let synchronization finish, make an offline backup, and avoid starting the game while files are being replaced.
What the files represent
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. The current filename/folder evidence is Separate game-specific save data exists beneath the remaster root for Final Fantasy X, X-2, and Last Mission.. File-extension context: No single extension is sufficient to identify every relevant save record. A location guide does not claim that every file in the directory is safe to edit or that files from another storefront are automatically interchangeable.
If the save is not where expected
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. Also check redirected Documents folders, Steam Play prefixes, account IDs, and launcher-specific containers where applicable. Preserve every candidate copy before testing a restore so troubleshooting does not destroy the only surviving version.
Verification context: Reviewed against current PCGamingWiki Final Fantasy X/X-2 HD Remaster save-location and cloud documentation.