Looking at your score history , you just played your first round as a pro ... 46 x 2 = 92.
When you move up a tier, you will play X amount of rounds to establish a new " baseline", so your "average" will go up and down until you've played the minimum number of rounds. After that, only your better rounds will count, meaning your avg will only drop from that point. The same scenario will happen when you move to Tour Pro, Master, Tour Master, etc.