Hi Dogrules23
you have done exactly what we are told you need to do, ie "in file explorer move the captures folder to the new location"
https://beta.support.xbox.com/help/games-apps/g...
i found that if i changed the place that new videos are saved, it also changes the location of the captures folder (or you can then move it to the new videos folder)
settings -> system -> storage
click on the "change where new content is saved"
change new photos and videos to your 8TB drive
see if captures that go to the correct drive, if not, move the captures folder to D:\yourusername\Videos\Captures