Hubitat and Alexa

The upgrade from C-7 to C-8 Pro went reasonably well except that four Sonoff ZB Mini’s controlling kitchen LED strip lights were missing.

Hubitat found them without a problem and I can now control them through a dashboard, but these lights were also controlled by Alexa and that is no longer possible even though they show on the Alexa Echo Skill.

It seems that if I put the ZB Mini’s into pairing mode to have them recognised by Alexa, I lose the the Hubitat connection.

I don’t recall having this problem originally and would, therefore, appreciate a reminder of the procedure.

Is it, perhaps, necessary to find them on E-WeLink as a first operation before adopting them on Hubitat?