oa_domain locks one domain as site default

hi everyone,

i successfully setup two domains, using oa_domain. It works pretty well, and i know it will get better. thank you for integrating this.

a question:

i have two domains,
site1.mysite.com
and
site2.mysite.com

if i start at the homepage (mysite.com) and goto admin, it says the default homepage is site1.mysite.com/welcome - it seems this should be mysite.com/welcome instead.

if i start from site1.mysite.com, it lists the homepage as site1.mysite.com/welcome, which is fine.
if i start from site2.mysite.com, it lists the homepage as site2.mysite.com/welcome, which is fine.

i'm concerned that site1.mysite.com seems to be considered the overall site default, where i think it should be (from the top level), mysite.com/welcome

i want to be able to share content with all the sub-sites equally, from the top level part of the system, and am worried that site1 seems to be locked at the oveall default.

is this going to cause problems?

thanks,
m