Want title in toc, titleabbrev in index

["Daniel Parker" <danielaparker@sympatico.ca>]

I'm using docbook-xsl-1.68.1.

 

I have an article, and I want the toc to display titles, and the index to show titleabbrev. 

 

I know how to use the parameter "index.prefer.titleabbrev", but is there anything like that for the toc?

 

If I include a titleabbrev, the toc uses that, and I can't figure out how to use the title instead.

 

Thanks,

Daniel Parker