WP RT Sitemap must utilize a parameter that is set within elegant themes. The sitemap was only displaying 5 posts per category no matter what was changed on the RT sitemap admin page. This was a setting in the admin panel of the elegant theme.
Uncertain how the plug in pulls the number of posts per category, but it is relying on a setting used with in the elegant theme for setting number of posts to show per category/tag/archive page.
Confirmed that changing the number of posts that would be displayed in the two separate elegant themes (ebusiness and mycuisine) to a higher number allowed the additional posts to appear within the sitemap.
There may need to be a tweak to override theme settings to allow all posts to be displayed.