Hi there,
Just wondering what happens if you change the zones and check the box on this dialogue:
I just want to make sure that it is only the zone percentages for each workout but not the FTP associated with the workout. Just looking for a way to better represent the polarized zones.
Mike
Yes that is correct. It won’t change the FTP, just recalculate time in zones and so on.
That’s great. Cheers.
just changed my power zones in the settings so far…
but when i go to an old activity (from yesterday) the changed names from the zones are fine, but the percentages are wrong!?
oh, i got it… found the “Update Activities”-Button 
Yes I had to do it that way to maintain history.