Last modified: 2013-03-10 13:28:36 UTC
array_diff_assoc converts values to strings. Perhaps we need to use array_udiff_assoc that also diffs the values. What we want is to get list of message groups with key additions / deletions to purge the completion statistics (as last resort, ideally all the operations that handle these changes would clear the stats themselves - this also misses content changes, but those usually cause page changes which should clear stats for affected groups).
