Problem using photometric lights in 3ds max design 2009

[shuaibanim]

I'm facing a problem in 3ds max design 2009.

 

The IES photometric lights (web) go to default intensity value every time i reload a texture map on any material or reopen that particular file.

but this thing never happened in 3dsmax 9.

 

normally IES photometric web lights should go default only if one reloads its web file.

 

I'm using Vray 1.5 sp2 with the software

 

 

please help

thanks