Morning Hornet3D - Poser Pro 11.2 still does initiate a file search for missing ones. But not for .PMD files, which I find right odd. I was one of the first to buy the original Poser Pro and loved it for one reason in particular. Render in Background. Get a render going and keep working on a scene in the Pose room. There were other changes to the core program that were much needed. Poser used Relative Paths exclusively at that point (with Poser PRO, not Poser 7). Poser Pro would correct the paths in calling files (P*2 files) and save them. Seriously, that was SO great! Suddenly there was no issue over location of vendors morph delta folders. Just drag all of em into LibrariesMorphs and do a search for missing files ONCE and done forever! Oh that was nice.
It is clear that Poser still reads and follows Absolute File Paths, but writes only Relative File Paths. It would be a horror show if Poser attempted to correct ALL file paths in its loaded Runtimes. I bought PP 11 in 2016 and it would probably still be correcting paths in ALL my Runtimes if it were to do that. Not to mention replacing all "moving parts" Hard Drives with "No Moving Parts" Hard Drives. I've lost two 1 TB spinner drives that were used for content, one way or another. Thats sorta painful. All that stuff, installed and usable instantly by Poser and other programs. Poof, gone. Oh I obeyed the First Three Rules, so I have reinstalled all that stuff, and then some more through the last 2 years since that last one died. But it takes time to DO that. And I am still doing that! And I am still burning 25 gig BluRay writable disks with the new content too. That said, at least I have it.

My 66th Birthday PC Build (July 1, 2020) :  named BadMoonRYZEN!, W10Pro x64, Octal Core RYZEN7 X3700 4.05 GHz, 64GB DDR4 RAM, GeForce RTX 3060 - 12GB GDDR6, PP2014, PP 11, P12, PS-CS4 Extended & Vue 2024.

McG.