After getting the error described at the link below, I have set the Transfomer to NSSecureUnarchiveFromData (it was nil before) for an entity's attribute.
CoreData crash error Xcode 11 Beta, IOS 13 Beta
I am using the transformable type to store an array.
Everything seems to work fine when I update my app, and data is preserved, however, I haven't had to perform any kind of migration. I just made the changes in the same xcdatamodel that I had before.
Why haven't I had to do a migration, or should I have done one and could problems be caused further down the line if I don't do one?