plone/plone.app.upgrade — comment on commit 83fc72bacc8ee545060032857861b785f6125432
File: plone/app/upgrade/v40/betas.py line 276
By hannosch:

@vincentfretin yep, that line looks wrong. This whole code is likely buggy - at least in the two migrations I did, I ran a full "reindex index" on the object_provides index instead.