I imported some animation into my project. At first, the animation (which was 4k downscaled to full HD) played smoothly. But something changed... playback of this section became erratic and I could not recover the situation. Then I got a message saying that I needed to create proxy files for unnamed footage. This took me by surprise. I let the creation of the proxy files go ahead, assuming that only one or two were missing... but after several hours of proxy creating, I decided that something had gone badly wrong. So I aborted the process. I now want to resume work on the project and wonder if I can use the previous day's version? I seem to have numerous BAK.MV files... is it possible to import the one from the previous day? If so, how?