if you want to transfer forms from wordpress to joomla, install the latest version of joomla 3 and breezingforms for joomla 3.
You can export form from wordpress, and import it in joomla.
For export in wordpress go to Breezingforms->Configuration->Create package->from form selection seelct forms which you want to export, and click on Continue.
Then go to joomla, and in Components->Breezingforms->COnfiguration->Package installer->seelct this xml file->and click on Package installer, and that is it.
If you get in stuck let me know and I will do it for you