I’ve had a QU-16 for about 18 months, and have only tried this recording to USB once or twice, just to see if it worked.
If I remember correctly, the ‘settings’ on each channel on QU-16 do not affect the recorded tracks. I’m pretty sure they go down ‘raw’ BUT if you play it back straight after, with the same ‘settings’ you had while recording, it will enable those settings such as EQ etc. This is only a playback thing, and has not actually changed the recorded files.
When I did it, I loaded the recorded tracks into Pro Tools, where they appear as raw un-affected tracks for editing, EQ-ing, mixing etc.
I may be wrong, but am pretty sure that’s how it works.