Usually hasn't had issues cleaning. While on a cleaning run, it got stuck in a roll of paper. I stopped and restarted after taking the paper out. However, it got confused where it was, so I returned it to dock and started again. But now, it seems to think it is somewhere else. When starting, it shows the dock position as the vacuum position, but after 'positioning', it shows the vacuum to be in a different location on the map and proceeds to go from there. I tried going to a backup map, but the issue persists. How can I 'reset' the saved position so that when it starts from the dock, it knows where it is.