If you're moving save files around, and you can see them yourself but the game can't, then it sounds like you've maybe put them in the wrong folder? The saves need to be in:
Android/data/com.domain.corruptedkingdoms/saves
Maybe make sure you haven't accidentally nested the "saves" folder you're copying inside the existing "saves" folder or something like that? I know I've done something similar myself more times than I'd like to admit :P