If you are moving from an older version (like Empress) to a newer CODEX-based repack (like FitGirl), you often need to manually rename files within the remote folder to match the new version's user ID.
Before doing anything, . You can find your original saves here: %SystemDrive%\Users\Public\Documents\Steam\CODEX\1551360\remote\ save game forza horizon 5 codex
%LOCALAPPDATA%\Packages\Microsoft.SunriseBaseGame_8wekyb3d8bbwe\SystemAppData\wgs Key Technical Insights If you are moving from an older version