Update Starting Timecode from Audio Timecode

I tried reading the Audio timecode from a video file to sync with my wave file.

but Avid only updates the Auxiliary TC1 in the metadata, not the starting timecode.

So I cannnot sync the starting timecode from my wave files to the Auxiliary TC1 of the video.

I first have to copy everything from one field to the other.

Is there any way to make things easier??

Thannks for your help! Its a great community!!