re-link mts files when only BDMV is visible in Finder

Hi-I'm trying to re-link mts files.

I filmed on Sony XD Cam FS5II. I copied the BDMV files from the SD cards to an iMac harddrive (one BDMV per SD card). I used File > Import from Premiere to import each BDMV file into my Premiere 2019 project. My understanding is the clips (mts files) were created in that step. I edited the project in Premiere 2019 for a while, then last year opened it in Premiere 25.5.0 (Build 13) and have been editing there. Then recently I had to move the project to a different iMac (OS 26.1). I copied the entire project file from the original iMac (including subfolders for each SD card with a single BDMV file in them) to an external hard drive. Tried to open the Premiere Project from that external drive on the new iMac and was prompted to re-link media. But the files listed in the re-link dialogue are Mts files, and I can’t locate those in the Finder.

Does anyone know a process for re-linking them? Thank you for any tips/info.