Firefox was replaced with GNU IceCat for the most part... It was unaffected by Mozilla's Suspicious Certificate Scandal. Coincidental, Maybe? Google is thinking of limiting or killing ad blockers. It could be a Brave new web where everyone else's ad is blocked except for their own? Yes, I was wearing my armadillo shaped tin-foil hat. (A geek twist on The Dukes Of Hazard Movie

Trying to replace Thunderbird w/ Claws Mail, imported Mail worked fine, the address book is hit & miss.
What is the trick to exporting/importing T-Bird LDIF file to CM so all the fields are recognized?