Checking in to see if anyone has a solution for this.
Thanks,
Jim
@jhdemicco, I just did this and am happy to share. Copy the following XML into a file with an XML extension and import it into the plugin manager: (1) modify the ‘Release News’ to whatever category name you want to sort and (2) change the ‘post_modified’ to the wp_post table column name you want to sort by and (3) change DESC to ASC if you want to go ascending:
<data>
<name>Sort Posts by Last Modified</name>
<description>Sorts all your posts by Last Modified.</description>
<type>filter</type>
<tag>posts_orderby</tag>
<arguments>$orderby</arguments>
<content>
if(!is_admin() && is_category('Release News') ){ return 'post_modified DESC'; } else{ return $orderby; }
</content>
<priority/>
</data>
Cheers!