Keep getting corrupted save files on HGSS

[lotus412]

I'm not sure what is going on but I tried inserting a larvitar into my party to use at the beginning of the game. Sometimes the save will be fine but sometimes it will corrupt after I import the backup memory to the desmume rom. I dragged and dropped an articuno just as a test and while it was fine on my gen 3 saves, it corrupted the save on my HG. 

[AlamosIT]

In HGSS, when you edit something in PC/Party with PKHeX, then you should save in-game until you see "Saving a lot of data...".

This was an already known bug that should has been fixed. But maybe the issue is still present, just try.