I've been using SCCM 2012 to image our systems (~1500) for about 6 months now.

When attempting to re-image a laptop I have found that SCCM replaced the wired MAC address in properties with the wireless MAC. This is only an issue when I go to image as it will not PXE, I get a no boot file received message.

I have been deleting the laptops from SCCM completely and then re-importing them using the wired MAC.

Is there a way to have SCCM actively hold both MAC addresses?

After re-adding the laptop with the wired MAC it is still holding a record of the last PXE Deployment (once deleted the system will PXE boot fine). 

Seems to be same as http://social.technet.microsoft.com/Forums/en-US/0a5ae1fd-7a7a-4789-9b87-1d9a721efbfe/sccm-2012-losing-wired-mac-address-of-laptops?forum=configmanagerosd