Trying to import AVCHD movies on the internal memory of Vixia HF R62 into iMovie 10.1 on Mac running Yosemite. The camera appears in the list of devices of the import window but none of the clips in the internal memory appear. When I click the "import all" button in iMovie, the import window disappears and the camera doesn't appear to be doing anything. Is there something else I'm supposed to do to get the videos to import into iMovie?