Do I understand correctly your workflow?:
1) open uTool and import some data from USB drive
2) minimize uTool
3) remove the USB drive from the computer, plug it in the uTrack, record…
4) unplug the USB drive from the uTrack and plug it in the computer while uTool is still minimized
5) maximuze uTool -> the USB drive content is probably not updated on screen.