Honestly i think 343 not carrying over progress is a terrible idea. Its a copy and paste retweaked to work with newer hardware. Its not a new game so why wipe the slate for everyone? I would understand if it was a remastered version but it is not. I would not buy this version of reach until after someone reviews it post release, just in case they are selling a turd painted in gold by cutting some corners. I personally think its worth 10 to 15USD leaniing closer to 10. I would strongly advise against pre ordering.
Halo: Reach stats not carrying over to MCC