Zwiftpower: moving to Cat. A+ colors all A letters to black (previously red)

Hi, I just reached the A+ category in Zwiftpower and was wondering why all my history races in A category are now black colored (A+ cat) instead of still red (A cat), similar to my history as Cat B or C racer. I actually liked my race history and was always able to track my progress - now the progress from A to A+ is a bit lost, as it looks like a jump from B to A+. Thanks, Christian