Lost BISS after getting PowerVu

I have a working Open BH 1.0 image which successfully gets BISS channels using Oscam 11391 on my Solo2. I have been ages, but at last succeeded in getting PV channels on Open BH 4.1 using oscam-emu 11392, however using the exact same SoftCam.Key files the BISS channels don't open in OBH 4.1. What must I have deleted out of which oscam file?? Please help while I still have some hair left.