You might want to wait for the 6.5 release of UBB.threads, which includes the ability to import external data directly.

It uses the same import/export specifiction as the other Infopop products. See this post over on UBBDev for some information about how the importer works: https://www.ubbdev.com/ubb/ultimatebb.php/topic/8/3682.html

You'll need to create your own import spec YAML file, but that's usually a pretty easy thing to do with the existing files as a guide.

Charles Capps
Former UBB.classic Maintainer