When a page is moved over a redirect, the redirect revision is deleted entirely from the database. In the interests of not having edits completely disappear, we may want to put this somewhere, possibly in the archive table, or merging it with the history of the article moved over it.
Related to bug 16877
Version: 1.16.x
Severity: minor
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=16877
https://bugzilla.wikimedia.org/show_bug.cgi?id=5785