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Core Data Versioning - more than two versions, how to map upgrades?

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Core Data Versioning - more than two versions, how to map upgrades?

Subject: Core Data Versioning - more than two versions, how to map upgrades?
From: Graham Perks <email@hidden>
Date: Tue, 12 Aug 2008 21:38:44 -0500

I have model versions 1, 2, and 3, 3 being the latest.

Obviously I need a mapping file to upgrade 2 -> 3.

But for upgrades of v1, should the mapping file be 1 -> 3 direct, or 1 -> 2 and Core Data will do a two-step upgrade?

The latter would be simplest, having Core Data automatically chain upgrades. Is that how it's supposed to work?

Cheers,
Graham Perks.
http://www.asinglepixel.com
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