Debug Core Data Migration to compare hash values

Question

I read this Post (click) about fixing a nasty core data migration problem.

The author Victor Bogdan wrote that he enabled Data Migration Debug to get the hash values

Answer 1

To enable core data migration debug mode, you will need to add

-com.apple.CoreData.MigrationDebug 1

to the "Arguments Passed on Launch" location in your scheme.

Apple Technical Note TN2124 describes this as well as many other debugging features.