Copy SiteMap

System

Hey techies,
If the site have more than 100 nodes in site map and user is suppose to copy site pages under site 1 to with another site 2 under the same branch. In that case user will create new site, copy .page file under new site but not the default.sitemap.
User do not want to re-enter site node values again in default.sitemap of new site.

Then how user can achieve this ?

TS 7.2.1
SitePublisher
.net environment
IIS 7.5

Thanks
Manu