wko+ and changing FTP input for an athlete

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Is there a way to change the FTP of a particular athlete and have it only affect the TSS scores from the date of the change and future efforts? When I manually change the FTP numbers for an athletes profile it changes the TSS readings from previous weeks skewing the graphs from earlier workouts when FTP was significantly lower in the earlier season.
~Nick

In the Power Training Zones window, click Options (upper right) --> New Zones, then enter the new FTP and effective date of the change.

You also need to click Options > Calculate Zones > [zones preference] for the ranges to update (which will affect any zones-based distribution charts).