Good to hear that it's a success! Those 69s are sweet news!
But, these alone wouldn't put you to a 69.00 average.
You upgraded to Tour Pro while your history doesn't show any TP score. Thus your average should be your last Pro average, but, with a 31 on STA and two 69s now as the lowest scores, this is impossible IMHO.
My theory is:
Your last 69 score is your first TP score, and the average follows 1:1 after it's reset.
This, or you played a secret score (Bracket? RG?), or WGT changed their display logic.