This is Multisite related
I figured out that if you want to make a full post display rather than just the excerpt as well as any other add-on , you need to activate the add-ons in both the Network admin as well as on the sub site.
My issue is that now I have figured out why my posts were only displaying the excerpt, now I want to re-process the same posts from the same feed I still get the same issue as when I started.
To make sure I fixed the issue I tried processing a new feed entirely and it worked flawlessly!
But reprocessing existing feeds after deleting posts that were pulled from it in both the "Posts" menu as well as emptying the in the "Trash" I still have them displaying the same issue which is - the post imported from feed only shows the excerpt.