Last month I upgraded my site from EE 1.x to EE 2.2.2. I’ve since discovered that large sections of text in my wiki module were deleted during the upgrade. Specifically, in articles that contained foreign characters, such as the Swedish letter å, everything after the foreign symbol (including the symbol itself) in the article was deleted.
Luckily I made a backup of my database before the upgrade. So I’m able to recover the missing text. So I’m posting this more as a bug report than as a request for help. Just thought you guys should be aware of the issue.