Use Transition Action in Workflows. With function Set Variable you can do this - 2014 SOLIDWORKS PDM Help - Transition Action Dialog Box
For copy Description property from custom property tab @ to "Default" configuration property tab don´t use %var_Description@MyConfig1% but %var_Description@@%.
I hope this helps
Yea. The issue was two fold. I'm pretty sure the %CurrentConfig% is a bug with 2014, and also I was trying to use dispatch to accomplish something it couldn't, largely because my understanding of when variables/custom properties get mapped to cards and the DB was poor.
Specifically, the Revision custom property used to map the EPDM revision is overwritten on the file with the DB value every time the file is checked in. So I was trying to move the Revision to a new property before comparing it to the EPDM DB through dispatch. I figured if I called it the first time before the rev is incremented it should set it first, but it gets set and overwritten immediately when it hits the vault before the initial state is even set.
For moving all other properties, I did use the Transition Action>Set Variables. Though the downside is I can't use a dynamic configuration to move them to, which was made irrelevant by the %currentconfig% bug. Luckily, 99% of my legacy files have the default same configuration name.