Editing in Photoshop Changing File Name

MacBook Pro (2018)

Big Sur: 11.5.2

Adobe Photoshop 2021

I'm shooting thousands of product photos tethering in Lightroom and spitting out CR2 files. I assign my product file names, select all my photos to "Edit in Photoshop", record and run a script in Photoshop to batch save as PSD in the same folder with the same file name. Add the PSD files to a collection, clip, correct, rinse and repeat for a year and a half. Magic.

However, yesterday I updated to the latest version of Lightroom Classic, I had no choice but to. I also lost Photoshop 2020 and have to use 2021 now. Since then every time I edit an image directly from Lightroom into Photoshop it's adding "-1" to the end of my filename. This filename is used in a script that runs in Akeneo to associate them with products, so I need to the be exactly the same. The next time I edit the same photo it tacks on "-2" and "-3" the next time and so on. I've been working away at this project for a year and a half and right as soon as I update there's a hiccup. I'm currently at 8,733 product photos and there's more to come, I can't be manually changing all my files to remove the "-#".

Someone? Anyone? Setting that has changed? Please?