Switch existing VM with Bootcamp Windows 7/8

So currently I have Windows 7 set up as a Boot Camp parition on my Mac Pro. I have VMWare fusion, and I configured it so that I can run the Boot Camp parition within my Mac so I don't have to natively boot to it.

I recently created a Windows 8 VM image within VMware Fusion, but due to the whole "move your mouse to the corner of the screen" thing with Windows 8, it's kind of a pain to have it run within VMware. So I found out that I could not have two different Windows paritions within Bootcamp.

Basically what I'm trying to do is backup/save my Boot Camp image as a vmdk file so I can still open it via VMware (and not lose the information already on it), then install Windows 8 on Boot Camp so I can natively boot to it, and still be able to open it via VMWare Fusion like I'm doing now with my Win 7 Bootcamp partition.

I really don't care about transitioning my Windows 8 Virtual Machine directly to Bootcamp, so I don't care if I need to install Windows. I just want to backup/save my Windows 7 Bootcamp parition as a VM.

If I didn't care about saving my Win 7 information, I'd simply remove Windows 7, install Windows 8 and make a new virtual machine and install Win 7 to it.

Looking for help, suggestions on this. I'm assuming that there is a way to backup the Bootcamp VM somewhere within VMWare Fusion...