I've been a user of GraphicConverter for well over a decade now, until recently on my old MacBook Pro. Upgraded to a newer MacBook Pro (running Monterey) and running GC 11.5.4 on it (yes, I know it's not the latest and greatest, but as a retired software engineer, I prefer the old known bugs to the new exciting ones

Importing photos from my camera is fine and works perfectly. Importing movies from it is another story. They import fine, but they all come in with a timestamp that is 12 hours in the past from when it should be.
This is clearly some problem in the GC browser, since if I insert the SD card into my USB hub (thus enabling me to look at the files both in the Finder and in the GC browser), I see the wrong timestamp in GC but the correct one in the Finder.
Also: the GC 9.7.5 browser on my old machine (running El Capitan) also shows the correct timestamp.
It's only GC on my new machine that gets it wrong.
Can some kind soul please point me in the direction of a solution? Many thanks!
