Error in displayed eFTP when workouts are excluded

I recently got a power meter, and decided to ignore the power outputs of the previous Zwift workouts I have stored since I wasn’t sure they were accurate. I expected this to correct my eFTP, and indeed it does on my “Athlete” page and power curve.

However, it is not correct when I click on an activity. Both the value displayed for eFTP in the top right (minor quibble) and the % eFTP chart (more annoying) use all my prior workouts including those I excluded. Is this expected behaviour?