I got an old Vbulletin 4 forum with default template, and now no active users. I'd like to convert it to mybb and use the Vbulletin license for another project. There are many attachments with images, texts and pdf. What is the best way to covert it? Mybb Merge System only supports vBulletin 3.6, 3.7, or 3.8.
That's a good one. My only guess is to revert it to 3.8 so u can use the Mybb Merge System. I first converted my vb4 to IPB then to vb3. There could be a easier was but this is what came to mind.
The vBulletin 3.8 converter for MyBB will work for vBulletin 4, save a few attachments (the database architecture is almost the same). If you are patient, an official vBulletin 4 converter will be coming out soon. If you can forgive yourself of redirecting vBulletin URLs to MyBB, then you should be fine. MyBB has really gone quite a long way.