Filing a late California return (Non-resident)

Hi all,

 

I recently learned I was required to file a California return for a prior tax year (540 NR, as I was a non-resident.) I've completed and filed Federal and resident state returns in the year they were due, and currently have access to a software copy of Turbotax for the year I need to file.

Is there an easy way to complete and file just the California 540NR using the information from my completed Federal return (and identifying the California income source) without having to start the process from square one?