My best workflow for AVCHD is

My best workflow for AVCHD is to transcode it into DV first, open a new project based on what I will need for the final video (480p, 720p, 1080p), import the DV files and do my editing with the DV files, and then, after I’ve viewed the final edit, I make the DV files go offline and link to the AVCHD files for the final render, and I leave the audio from the DV files in place, so I’m not having to look for the audio tracks.