Thanks for the update @chnapy
Regarding the structure, the Home Live Plugin gave me two options, so I actually have the files saved in two different ways.
The first format is organized by folders. I have a main directory, and inside it are subfolders named "Box 001", "Box 002", etc. Each subfolder contains the 30 .ph3 files corresponding to that box.
The second format is just a single flat folder containing all 2,000+ .ph3 files directly inside it, without any subfolders.
Let me know if this info helps!