User allocation with Protected content and Pro Sites

Hi,

Currently in test mode. I have a number of sites allocated through Pro Sites registration.

I have only 1 member in Protected Content.

When I try to create an new member account within Protected Content using a email connected to a registered Pro Site it give an error" That email address is already taken, sorry.
http://screencast.com/t/mk559jxoGNi

Please advise.

Thanks,
Justin