I am running Ubuntu 20.04 w/ Thunderbird v 102.4.2 I am trying to export my address books in vcf/vcard format. The articles I have read on the internet say to select Tools => Address Book and then choose "Export" from the menu tabs, then choose csv or vcf or whatever format to export into. My main problem is that there is''' NO "Export" tab on the address book menu'''. It does have an "import" tab, however.