correct kickr power errors in fit files

On a couple of rides this year on the first peddle stroke, kickr wattage went up to 2000 watts for 5 seconds. Clearly an error.  Unfortunately I didn’t restart the ride, so my power curve in zwift is now nonsense. In strava i was able to crop the ride and remove the first 5 seconds. Is there a way to correct this in Zwift, or would I have to delete the ride as a whole? would deleting the fit file for this ride correct the power curve in zwift, and fix the achievements?

thanks 

To remove that you can delete the corresponding cp file in \Documents\Zwift\cp\user*****

No need to delete the ride or the .fit file and I also think you will still have the achievement since at the moment there is no way to remove them. 

I see the same thing with Zwift and a gen 1 Kickr. I did find that removing all the files as Paul mentioned started my power curve history over. I had no way to know which files had the bogus power entries (is there any way to analyse and sort them for high power anomalies?).

Not too many rides later I have a short duration anomaly back on the record again – 1,268 watts. I know I have not come close to sustaining 1,268 watts for any seconds on any recent ride.In the long run it would be nice to have a push button, easy way to identify and delete anomalies like that. SportTracks and Golden Cheetah software do that, I know.

Thanks Paul Allen - this worked.  Steve - take a look at what date your anomaly was set on (you could use strava to do so, not sure how otherwise), and then look for a CP file that was modified on that date .  I cut the file out of the directory and put it somewhere else and then checked the impact by ending a ride and viewing the power curve.  I assume it takes out any critical power points that were updated by that file rather than just a single time point e.g. 2 sec, but its better than having a naff curve.

Paul’s suggestion also worked for me. Thank you, Sir!