I suppose I had to get to core data migration one day … :(

I've read the documentation a couple of times and it says that the default 
migration process finishes by renaming the old store to the same thing with a 
tilde prefix. Does that mean you, the programmer, are responsible for deleting 
it again afterwards or is there a piece I've missed where eventually it does 
get cleaned up? I was thinking that if you use automatic migration, you don't 
even know when the store has been migrated and that you should thus go look for 
a tilde version and remove it. If that's the case I wondered how many apps have 
upgraded their core data stores and left the old one sitting there taking up 
the same amount of space. _______________________________________________

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