Would changing his wt correct the erroneous data?
I’m assuming that even with an incorrect wt (lighter) he produced his usual power and only when that power is divided by wt, does the w/kg go over the limit.
I thought I read earlier that your power data from the last 60 days is divided by you current wt.
Zwift can do a Hard Reset to pull fit files but it’s date limited.
My guess would be: No changing his weight, after the ride has been recorded in ZP, would not change the W/kg for that particular ride. ( This is a guess and I would be happy to be put right by anyone who knows). Edit: if so therefore important to also look at kg column in ZP when checking through riders 20min W/kg performances for past 60 days to get the most accurate information.
That is also what I am assuming. If you ride around using a low weight, either yours or someone else’s, then I believe your category will be calculated on that weight until you remember to revert back to your correct weight.
Yes I agree and have commented on that point in another thread.
I think using lightest weight as opposed to current weight might have some benefits and prevent/reduce weight doping. However not ideal or likely to be supported by those sharing an account with a much lighter rider !!
Thank you to everyone who took the time to reply.
The system has somehow put me in the right enforcement categories and C is now available.
I’ve also advised the bride not to change my weight from now on should she use Zwift.
For context to those who said she should get her own account she rides maybe once per week on Tempus Fugit and doesn’t pay attention to the screen thus there is no point paying for another membership. She is also a cyclist hater. Hahaha.
Bride could create her own Zwift account and use the free 25Km per calendar month. 
While those 25Km would be consumed quite quickly on Tempus Fugit, they could cover a number of sessions on Ven Top.