FYI - I used your wpForo to Flarum import script this weekend. Worked! Considering the age of the script and how outdated all the versions are, I was surprised it still worked. Thank you so much!
ONE COMMENT: On a 250K forum, it did throw about 2500 insertion errors into the flarum_discussion tables due to the fact the topicTitle was too long. I added a simple php truncation tweak of the title and then the import went flawlessly.
You really should market this script to wpForo users. wpForo was a massive mistake. What garbage software. The overhead of wordpress, per request, is insane. wpForo was so slow, bloated, complicated and required too many paid addons and updates all the time. Ruined my forum. I regret the day I switched. 😥