Alternative for selecting ISF file in FM12 Webhelp publishing

Hi

I am currently evaluating TCS5/ FM12 as an upgrade from TCS4/ FM11.

In TCS 4, I could create an ISF file that contains my FM-RH style mapping and use that file in FM to publish the WebHelp. Now in FM12, I don't see the option to assign the ISF file. Instead, I need to start all over, first pull up the CSS file that contains the custom styles I added in RH, and then create a STS file which stores my style mapping.

Is there any other way out? I have about 70+ styles, mapping and testing them again would be a crazy task!

Thanks in advance.

Sreekanth