This is a problem I am getting but I am not sure it is Vray’s fault.
I have spot light (A free light not vraylight or vrayIES) Assemblies with an IES file with a default value of arount 600
- I changed the value to 10000 and closed the assembly.
some times the value is reset to the 600
I made sure that the value is not keyed.
I too have also noticed this happening and kept thinking I was going crazy. I would adjust light multiplier intensities for both standard and vray lights and save the scenes. These scenes had a 50/50 chance of reseting the multiplier values after the scenes were opened again. (Max 2008/2009)