JPH

Well, that is odd, it is now working.

I had it set up to only produce a feed creation for only portfolio post types – “/feed/?post_type=portfolio”, and all other types (posts, pages, media) disabled.

I went in this morning, and uncheck-marked/disabled the Portfolio option, and check-marked/enabled a simple Post option, then went and created a test post, and all of the sudden my last portfolio post appeared in my feed, right along with the previous ones, and functioning as was before.

So, I am just not going to touch anything, and leave it working.