plone/plone.app.versioningbehavior — pull request #3 by mikerhodes (2012-08-30 15:44:28+00:00)
Title: Don't fail to create a version if a field once present in the schema has been removed

When developing a versioned type, I removed a blob-backed field from my schema. This caused the CloneNamedFileBlobs class to fail as it tried to re-attach a blob from a field that no longer existed.

I'm not sure if there's a better way to fix this -- my patch feels a bit sticking-plaster?