In some cases topics that have been moved still appear in the section they were originally created in, but when opened you can see they have in fact been moved.
I've seen this a few times now. Don't know if its an existing issue.
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It's not an issue.
When moving the topic, we (mods & admins) check the option to let a "ghost" of the topic in the forum it was originally posted in.
Gotcha.