Hi!
I reopen this topic because I need something similar. In my site, moderators solve issues posted on different categories. When solved, they use tags to identify them and they want to remove that topic from latest but not from the category. We also don’t want to use muted/invisible option, because it’s not so easy to find or filter those topics afterwards.
I think @hollyw meant something like this. Is there some theme component or plugin that allows this?
Thank you!!