In Setup-Memory, I select the show residing in my GLD112, then select information. Then if I have a USB stick plugged in, and copy that show from the GLD to the USB stick, then select that just copied show now on the USB stick and now select information, it shows a different time than the time of the original copy (residing on the GLB).
If you copy a file in windows or Linux (cp) the date/time stamps are the same.
BTW, did find a way to crash the GLD. See what happens if while you are updating a show, you plug in a USB stick!