4teamwork/opengever.core — pull request #220 by phgross (2014-04-03 09:20:58+00:00)
Title: Rebuild broken Reference-Prefix Upgrade-Step 

The upgrade-step in https://github.com/4teamwork/opengever.core/blob/master/opengever/base/upgrades/to2601.py is currently broken, because it replaces persistent mappings with non-persistent ones as a side effect.

This needs to be fixed before any other sites are upgraded to >= 2.6.x