if you have a need to move or copy a Project Site or Project Workspace from one location to another, the two commands below will be very useful to you:
Command to back the site up to a file
stsadm -o export -url "http://brismithv0832:8080/CAL/Project1" -filename "Cbackupsavesite.bak" –includeusersecurity –nofilecompression
Command to restore the backup file (project site/workspace) to a new location. A new/blank site should already be create
stsadm –o import –url “http://<serverName>/pwa/<siteName>” –filename “c:backupsiteName.bak” –includeusersecurity –nofilecompression