The Kunena team has announce the arrival of Kunena 7.0.5 [K 7.0.5] in stable which is now available for download as a native Joomla extension for J! 5.4.x/6.0.x. This version addresses most of the issues that were discovered in K 6.2 / K 6.3 / K 6.4 and issues discovered during the last development stages of K 7.0.
The Kunena team is also pleased to announce the eleventh version of Kunena 6.4, a native Joomla extension for Joomla! 5.0, 5.1, 5.2, 5.3, 5.4 and 6.0.
This is for users to help other users, to discuss topics that relate to migrating from other web-based forums and converting the data into a form that will operate with Kunena.
It is important to note that the Kunena team does not have a standard, recommended or supported protocol for these ideas and that posting questions in this category may not receive advice from team members.
The most recent posts about this that I can find are a few years old. I thought I'd read there was some sort of importer or migration tool you could use, and that migration from phpbb to Kunena was simple. Am I dreaming?
I did a conversion some years ago. It was complicated as I used the bridge JFusion, which had an own userid different from phpBB and Joomla. Another disadvantage of the script was that members with no posts was wiped out. But then there were a fix for that. Why not try if a conversion works?
I did that as avatars settings are lost in the conversion and personal avatars, must be possible to choose for members.
Then copy your rank images from phpBB3 to Kunena.
media/kunena/ranks
Then copy smilies from phpBB3 to Kunena:
media/kunena/emoticons
I did not fix __kunena_user_topic and instead I recalculated statistics in kunena admin.
Some old smilies code disturbed some messages, but that I fixed with extension ReReplacer in the database. But youtube code in posts was not possible to remove automatically as they varied. People were pretty pleased with the new forum, but they had to choose their personal avatar again.