acekard 2i makes new sav files! wtf

i played so many games
i wanted to play sims3 so i updated my acekard2i to 1,8
and now its making new sav files on my old games!!!!
pls help

check that the default sav extension is .sav instead of .nds.sav. if that doesnt work, try changing from .sav to .SAV, or .SAV to .sav