I want to get the persistent ID of the face.

So I used "GetPersistReference3" but the IDs change in several cases.

Case 1. Change the place of SW model files.

Case 2. Open SW model files in a newer version.

Case 3. Close and Reopen SW model files in the same process of SW.

I closed the SW model files and I opened the same files again without terminating SW. The IDs changed only a few bytes.

Then I terminated and restarted SW. I could get the same IDs as first.

In all cases the IDs only changed partially. I guess the IDs include the path of SW model files , the version of SW and so on.

I want to get the IDs without needless information. Can I decompose the IDs into various information?