Translating existing cells into a different technology

Hi all,

I am using Virtuoso 6.1.4.  I am reading through the documentation as I write this now, but I was wondering if anyone knows of a way to translate exisiting cells (or an entire Library) from one technology file to another. I have had no problem translating schematic and symbol cell views, however, when I try to convert the layout cell view I see errors like this:

" 

**************************************************

Incompatible purpose definition in source techDB:OLD_TECH and destination techDB:NEW_TECH

in source: purpose LOWCRNT 68  -- in destination: purpose: LOWCRNT 87 

 Error (ccp): ccpDFIIChecker: 

**************************************************

Incompatible purpose definition in source techDB:OLD_TECH and destination techDB:NEW_TECH

in source: purpose count 89  -- in destination: purpose: count 90 

Info (ccp): ccpDFIIChecker: End running.

Error (gdmExec): command ccpDFIIChecker failed with status 1

"

 Any help would be greatly appreciated.

Cheers,

bnugent