The only way I know to do it is via Fixed Asset Manager.  Then you're stuck with FAM for the rest of your life.  You'd export from Sch C to FAM.  Import from Sch C into FAM.  Manually change the asset linking to an S Corp for each asset.  Then export from FAM to S Corp.

Is there a high school nearby where you could find someone to do cheap data entry? 🙂