Thank you for your quick reply, looking forward for your help!
I must admit that I have no knowledged about ObjC or ObjC mix. About the "do not backup", as far as i know this is something Apple changed lately due to iCloud?
But if this App was rejected for this reason, it feels like many Nimblekit apps would be rejected with the same reason, or am I wrong?
This might be a thing to add in the next update, example:
1 = do not backup
0 = save as user-created data
EDIT: miss spelling