MIA

I figured out what the issue was. I was going about it the wrong way.

Solution:

I added the taxonomy wineries from my Custom Post Type wineslist to the themes Custom Post Type wineproducts.

The theme’s CPT didn’t have certain taxonomies/categories. So i tried using whatever categories both CPT pages had in common, wp core categories and post tags e.t.c. I even tried pulling the info directly from post_id’s. I didn’t know the Custom Post Type UI plugin allows you to add taxonomies to any CPT, not just the CPT’s that I created. So now the taxonomy wineries appears on both CPT’s wineslist and wineproducts. With the shortcode ‘[related_posts_by_tax post_types=”wineslist” taxonomies=”wineries” format=”thumbnails” image_size=”medium”]’, in the functions php page, all I have to do is select the wineries on both CPT’s and the wines are updated everywhere automatically since they are both single pages.

I couldn’t have done it without you putting me on the right track. I was going to give the plugin 5 stars regardless of this outcome, because this plugin worked when other plugins and methods didn’t, but I waited to add the fact that the support you gave for a free plugin was incredible. I have marked the status as resolved, Thanks a lot!