1. when ur gonna play MW2 STARt Eam (MW2 not yet)
2. make sure ur editet statsfile is in same folder
3. click/import box
4. open mw2, its should atomatticly import.
5. all u have to do in future is just open EAM when you are going to playing MW2.
this might be a solution:
if you try to hack to a lower lv than you are with EAM, then it wont save.
solution: reset your rank with my reset guide (link is in my signature) and hack to the lv u want after the reset.
all info about the effects of the reset is in the tut.
please rep on that thread if it helps or not.