Multisite Subdomain Set-Up Can Edit Pages, But Not View Them

Hi I created a subdomain based multisite network and have mapped 3 domains out . I imported an XML file from another wordpress install, and I can click on each page and post and edit it, but when i try to view it, it says it does not exist.

After I do the domain mapping, do I need to make any changes to the following?

Single Install Settings
siteurl: ( should I change this to the domain or leave it as is? )
home: ( should I change this to the domain or leave it as is? )

I did change the domain on the single install info tab, to the domain I mapped to it should I have left that alone as well?

Would appreciate any pointers, thanks!

-Aida