Seamless Batch Saving back to Lightroom workflow(Lightroom --> Photoshop --> Lightroom)

Hey fellow creatives,

I process thousands of files at a time quite often, so automation is high on the scale of importance. I've been streamlining my workflow using scripts and actions for the past few years. I have most of the processes working except saving my files back to Lightroom.

Here's part of my process:

1. Lightroom basic framing and necessary white balancing for all files - upwards of 2000 files

2. Select and open/handoff about 40-50 files at a time(don't wanna overburden my resources) to Photoshop for batch running my actions and necessary edits.

3. Batch save all open files back into Lightroom for tracking, exporting and archiving (Ideal case)

• The problem is #3. I've never suceeded in utilizing the seamless "handoff" back to Lightroom feature whenever I batch save(the link is ignored). I literally have to babysit all 50 files, saving them one at a time in order to handoff to Lightroom currently. It seems to me that if Photoshop/Lightroom retains the memory of the "handoff" from Lightroom for each of those files, there has to be a way to tell Photoshop/Lightroom that the current files being batch saved belong back in Lightroom.

I realize I could re-import the edited/photoshop files back into Lightroom once I'm done saving them(files reside in the same location), but that is another step I'd rather eliminate... because, you know, every second makes quite a difference when you're working with thousands of files lol

I wonder if anyone has discovered how to do this? Surely, I'm not the only one who deals with this much volume frequently. I figured I'd ask before spending weeks researching and developing scripts to accomplish this. 

Thanks