When there are a large number of comments on a post, you are prompted with this if you go to add another comment:
Please avoid extended discussions in comments. Would you like to automatically move this discussion to chat?
I'd like to request that this say that you're copying the discussion to chat instead of moving. The expectation from most computer users is that a move removes it from the source, and places it in the destination. A copy operation instead leaves the original in place, while making a duplicate in the destination. The latter is what this link does, but the text implies the former.
And yes, I realize this is a pretty nitpicky grammar request.