Recently PM 6 began ingesting movie files with a time stamp several hours later than when the file was created. It seems to affect any of my Olympus OM-D files, whether from E-M1, E-M1 mark II or E-M1X. This is fairly recent, I'd say since this or just the previous build. I'm currently on Build 2818. I'd say it's off by 5 hours. Perhaps a timezone adjustment issue. It's not misreading RAW or JPEG files. Just the .MOV files.
