The save shouldn't contain "hidden" developer cars that trigger anti-cheat.
Often hosts save files with community endorsements and "verified" tags. forza horizon 5 100 save game better verified
The data isn't corrupted, meaning it won't crash your game upon loading. The save shouldn't contain "hidden" developer cars that
The save game file has been successfully verified as 100% complete. All key indicators, including XP, vehicle collection, mission completion, and map exploration, confirm the save game's completion status. and map exploration
Before touching anything, copy your current save folder (found in Steam\Userdata\[YourID]\1551360 ) to a safe spot on your desktop.