Depends what kind of Acekard you're using. Looking at Shuny's online save converter the Acekard 2 uses the same type of save file as the R4. However the Acekard RPG requires conversion.
I've seen a few sites mainly stockholder circlejerk blah blah sites talking about it....but ND Twitter has said nothing and Atari has been as well...I'm wondering if this is a fake story to get Atari stock up