Board Thread:Support Requests - Getting Technical/@comment-28171460-20181116042937

A while ago, somebody with an explicit username decided to vandalize a page on a wiki that I edit. Currently, the edit has been completely undone. However, the wiki-in-question is supposed to be appropriate for all age groups, but — if someone delved into the page history — they would see some very explicit stuff!

Is there any way of removing such content entirely/permanently? (I could delete the page and recreate it, but that removes the entire edit history, depriving honest users of their credit, possibly going against the license.)  