462237 Database Migration From Joomla to Wordpress

We are moving our main website from Joomla CMS to Wordpress CMS. In the Joomla database there is about 2,800 articles that need to be moved to the Wordpress database. We recently tried to do this migration with just a simple script and for some reason only about half of each article was transferred. I am not sure if Joomla splits each entry in the database or what. On some of the entries all that was pulled was the title, no article content. The project is to migrate the articles on Joomla to Wordpress. I need every article to be complete. Also since we have attempted to place the articles on there already and they are all junk, the current articles will need to be erased.