From Autodesk
"Thank you for contacting Autodesk Support. I am very sorry for the delay as we have been very busy this week. Unfortunately walls that are copy/monitored will be based on the centerline of the wall. There is an existing item logged with our development team to enhance this feature in a future release - I will be more than happy to add your firm to the list of users requesting such an enhancement. Also, if you would like to leave feedback on this functionality directly to the Revit Product Management team, I encourage you to do so at
http://www.autodesk.com/feedback. They take this site very seriously and any comments are helpful for us to make better products. I apologize for the inconvenience that this causes you - if there is anything I can do to help, please let me know."
Answered my question, unfortunately I was hoping for a fix. Maybe with the next release.