Probably if you just restart the device, you would have lost it anyway...
Before updating, always reboot first, to remove any doubts...

last restart was 10 minutes before upgrade

upgrade 7.2 to 7.2.1 on hAP941 fix memory and cpu usage on hEXr3? i lost, all bridges, all filter and nat rules, all wireguard interface (peers is ok) :-( not fix, one hAP have still problem 19:43:31 system,error,critical router was rebooted without proper shutdown 19:43:31 system,error,critical ke...

upgrade 7.2 to 7.2.1
on hAP941 fix memory and cpu usage

on hEXr3?
i lost, all bridges, all filter and nat rules, all wireguard interface (peers is ok) :-(

I have bought 200$ mikrotik and I just found I can't use it with dude because I can't downgrade it to v6 (because it is factory set to v7) and there is still no dude for v7.
I hope I will not have to wait for too long. Fingers crossed.

try netinstall and downgrade it

Hello, I do not understand why you have been publishing Dude V7 CLIENT for a long time, if SERVER V7 not exist, can anyone logically explain it to me?