The tutorial outlines the pros and cons of each forum board and provides an all-the-way guidance on how to migrate from Kunena to bbPress in a few steps. https://wordpress.org/plugins/cms2cms-automated-kunena-to-bbpress-switch/

1. How It Works
Kunena to bbPress
Plugin

3.
Kunena to bbPress. How It
Works

4. There are lots of CMSs floating around the Web that provide great
platforms for serious site creators. Joomla and WordPress are
currently listed as the top popular and “loved” softwares out there.
Both platforms can be extended below their original purposes with
the help of different plugins and extensions. Kunena and bbPress
are competitive forum solutions for Joomla and WordPress
correspondingly that have been specifically designed to be simple
to use, yet sophisticated. Overall, when it comes down to Kunena
vs bbPress – you’ll certainly have great possibilities with both
softwares and it’s a matter of personal taste to decide which
application to choose.
Once you’ve given your preference to Kunena, but feel a bit
disappointed with it, and wish to pick up a piece of WordPress glory
– give a try to bbPress. The idea of migration across platforms
naturally scares many folks due to the fact that it’s quite labor­ and
time­intensive endeavor. CMS2CMS automated migration service is
exactly the tool you need to convert your Kunena content to
bbPress as seamless and error­free as possible. The service has
been specifically designed with end­users in mind – therefore, no
technical experience or special skills are required to handle the
migration properly. This utility makes people all over the globe
gravitate towards the platform in terms of ease of use and speed.
Ready to migrate to bbPress? So, read on the following all­the­way
guidance for you to see how easy it is to make the switch by
yourselves:

5. Step 1. Download the Plugin.
Go to official WordPress plugin repository and download
“CMS2CMS: Automated Kunena to bbPress Switch” Plugin.

6. Step 2. Plugin Installation.
After you’ve downloaded the plugin to you computer:
• Go to WP admin panel ­> Plugins ­> Add New
• Find “CMS2CMS Automated Kunena to bbPress Switch” plugin.
• Press “Install Now” Button
• Go to Admin ­> and click Activate

7. Step 3. Create Your Account.
To register your CMS2CMS account – just specify your username
and password.

8. Step 4. Connect Joomla Kunena.
In order to connect Kunena you should proceed with the further
steps:
● Download Bridge file (zip) to your PC
● Extract it from the zip
● Upload extracted ‘cms2cms’ folder to Joomla root directory.
It’s the top folder with the index.php file.
● Provide Joomla! website URL
● Verify the connection

9. Step 5. Select Migration Preferences.
Specify Migration Preferences by activating from the list of options
those you wish to be imported. Keep in mind, that it is possible to
import not only forum categories, posts, users and threads but also
tags, images, attachments.

10. Step 6. Run Demo Migration.
Try Demo Migration, which is totally free, for you to see the service
in progress. It takes a few minutes but provides an exceptional
possibility to estimate the visual look of your future website.

11. Step 7. Perform Full Migration.
In case, you are absolutely satisfied with the results of Demo – Start
Full Migration. After the final click, your Kunena content will be
converted to bbPress.
Now you are provided with all the necessary information on how
the Automated Kunena to bbPress Migration plugin works. So,
don’t hesitate any longer, make your choice and start the migration
right away.