I got all of these to work (test prints):
Support materials are for interface only. The PVA was tested for both interface only and support base & interface
FYI: The PVA for TPU was not yet tested - I did this testing before Bambu came out with TPU for AMS.
FYI2: The eSun PVA needs to have the PETG flushed more than default. Not sure yet if the PVA needs it or the PETG I’m using (Bambu and Polymaker) is causing the problem. Clogged Nozzle switching PVA to PETG - Bambu Lab P1 Series / Troubleshooting - Bambu Lab Community Forum