How to restart importing in 2.10

I’m using ver. 2.10 because it was the most fast and efficient one to import 12k posts

But, the real DB it has more than 24k post, just import post from 2015-to date

Now I want to import 2009 to 2014, but the plugin can’t import those

There are a way to reset the numbers? I read somewhere that you put some WP table value to 0, but in this version, there is a one entry in wp_postmeta for each post imported.
I tried deleting those from wp_post meta, but no avail.

Thanks, and great plugin.

https://www.ads-software.com/plugins/fg-joomla-to-wordpress/