Our team had very strange situation - twice. Recently I have moved frames with comments to another page (Archive) and then I resolved all the comments, then moved the frames to separate file and then deleted this page.
Suddenly all the comments (which were moved and then resolved) showed up on the original page - all over it! It was 2 months of commenting to untangle and understand which of them have to be deleted again.
Did anyone have similar situation? Is this some kind of a bug?