The Xbox 360 GRID patch was released yesterday (5th July). It was released to fix a host of problems experienced with the original GRID. However the patch also brought some bad news. It was understood that the game initially set low track times because of glitches, but the Xbox ranks were also reset to zero. It’s easy to understand why lap times were reset, but resetting ranks is rather unfair since they did spend a good bit of time racing to get up there. Fans at the Codemasters forums don’t seem to be pleased at all, as a number of posts are coming in where users are expressing their utter displeasure for the new changes.
Check out this user's feelings towards it. >>
Codemasters forum - Xbox360 Ranks reset after Patch/Update