sound output on my Logic Pro x defaults to soundID reference virtual instead of UAD Thunderbolt PCI card

Augusto Bizarra DAW output is assigned manually by the user in the DAW output/audio settings, the SoundID Reference app doesn't have any such access to DAW output settings. 

It was likely assigned as the output automatically by Logic itself due to the Apollo not being available at the time for some reason (so Logic just picked whatever was available “next in line” from the previously used outputs list).