MappingModel generate incorrect model hash for 'Preserve After Deletion' attributes

Today I've investigated migration error. According to my investigations model with preserving after deletion fields would get incorrect hash calculation. That's why custom mapping model would not applied.

In `-com.apple.CoreData.MigrationDebug 1` logs the next entry happens: 'CoreData: annotation: (migration) mismatched and destination hashes for mapping model MappingModel.cdm'.

My mapping model was regenerated several times on different machines to get rid of potential local issues.

Sample code: https://github.com/OdNairy/CloudKitError-FB6713955.git


Feedback ID: FB6713955

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odnairy
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exact same issue here

Posted by
bigmeech
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ran into the same issue with Xcode 13.X

Is there /has there been any feedback from Apple side?

Has anybody discovered possible workarounds? The only thing I found is at runtime: to load the migration manually from file, and adjust the sourceEntityVersionHash and destinationEntityVersionHash of the loaded NSMappingModel.... but that's nothing that I really want to do.

Posted by
ulizurucker
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  • I never heard back from my FB6713955 feedback :(

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    odnairy
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