ROM Hack Newer Super Mario Bros. problem

[Ajlr]

Hello. So installed Newer Super Mario Bros. DS and played it on my DS lite. It worked very well. But whenever I save and then played it again, my save file is gone. I'm using an R4i SDHC Dual-Core. Please help.

 

[Shadow#1]

Hello. So installed Newer Super Mario Bros. DS and played it on my DS lite. It worked very well. But whenever I save and then played it again, my save file is gone. I'm using an R4i SDHC Dual-Core. Please help.

Does the original game save fine?

 

[Ajlr]

Yes it does. When I played it only a few days after I saved, it worked fine. But when I leave the save file for so long and played it again, my progress is gone.

 

[Shadow#1]

Then I think u need to make better choices