MMF 2 - MMF Demo Question

If you are using the MMF 2 Demo version, should should you delete it before installing MMF 2 from the CD or does it matter? Will MMF2 be deleted by the installer automatically?

I deleted it prior to installing MMF2 Developer and it appears to work fine.

It is recommended to be deleted before you install MMF 2 CD version, but I think it's not a big deal.