The Kunena team has announce the arrival of Kunena 6.2.6 [K 6.2.6] which is now available for download as a native Joomla extension for J! 4.4.x/5.0.x. This version addresses most of the issues that were discovered in K 6.1 / K 6.2 and issues discovered during the last development stages of K 6.2
I have existing kunena forum wit about 30k posts and other old SMF2 forum with over 300k posts I would like to merge them into one. Is it possible with this importer? If yes how should I set options?
Unfortunately we do not currently support migrating data into existing forum. The issue is very hard to solve so that it works in most cases. So while I know how to do it, implementing would take a lot of time -- which is not something we have at this point.
