Hey William,
After i tested in my locally, i found out that is some issue, it didn't migrate Joomla article tag over to Easyblog, perhaps you can give it a try my following steps and see how it goes.
1. Make sure you running latest version of Easyblog
2. Download my attached file and replace into Joomlafolder/administrator/components/com_easyblog/includes/migrator/adapters/content.php
3. Then go to your site backend > Easyblog > migrators > Joomla Articles > check my attached screenshot below.
in other word, this Joomla article migrator will migrate all the Joomla categories, articles, and inside the article tags as well, but the Joomla categories custom field do not migrate over to Easyblog.
If the migration not work properly, perhaps you can start a new thread on our forum and provide us with your Joomla backend and FTP access so we can better have a check.