I think this is the solution I’m looking but want to make sure.
I want make sure the function of Make First Post Image the Featured Image is a permanent one-time function, not a script that runs each time the page loads. Is this the case?
Then once that First Post Image is the featured image, I want to remove it from the post so the post doest display a duplicate.
But as you can see if this is just a script that run on post load, these two functions would cause an error if the Featured Image Fuction is just “showing” as a feature, and if that first image was gone it would be an ugly cycle.
If these two functions can be run for my old posts, first making first image the featured image, the run the second function of removing the first image from post permanently…that would be perfect.