Saved state when updating

My app saves what levels you have completed. If I add an update, will that saved state be erased/overwritten when a user updates?
I searched the forums for info on this and couldn't find anything. Thanks in advance!
I searched the forums for info on this and couldn't find anything. Thanks in advance!
Comments
I've been building my game and testing it on the GS Viewer on the iPad and it's retaining every saved Attribute, as long as you don't change the Load/Save key you assign it to.