Migration C5 to C8 - Blind faith in Hubitat

It would be more reassuring if these problems did not exist
https://community.hubitat.com/t/zigbee-devices-unreliable-after-c7-to-c8-migration/
https://community.hubitat.com/t/c8-zigbee-radio-turning-off-on-multiple-times-a-day/
"Unfortunately, some new Zigbee 3.0 devices have problems with the EFR32MG21 chipset used in Hubitat C-8"
But OK, I will give it try.