How To Migrate SharePoint 2007 SubSite To SharePoint 2013 Site Collection

1. Export To (SharePoint 2007 Sub Site)

stsadm.exe -o export -url <http://localhost/subsite> -filename <C:\Export.cab> -includeusersecurity -versions 4 –overwrite

2. Create New SharePoint 2007 Web Application and Site Collection (SharePoint 2007).  
 
3. Import To New Created Site Collection (SharePoint 2007).

stsadm.exe -o import -url <http://localhost>-filename <C:\Export.cab> -includeusersecurity

4. Get Site Collection DB Backup (SharePoint 2007)
 
5. Move to DB Back SharePoint 2010 environment
 
6. Create New SharePoint 2010 Web Application and Site Collection (SharePoint 2010 claims based authentication)
 
7. Using DB Attached Method and Migrate SharePoint 2007 to 2010 

http://technet.microsoft.com/en-us/library/ff607941(v=office.15).aspx
Test-SPContentDatabase -name WSS_Content_DB -webapplication http://sitename

http://technet.microsoft.com/en-us/library/ff607581(v=office.15).aspx
Mount-SPContentDatabase "MyDatabase" -DatabaseServer "MyServer" -WebApplication http://sitename

 8. Get Site Collection DB Backup (SharePoint 2010)

9. Move to DB Back (SharePoint 2013) Environment

10. Using DB Attached Method and Migrate SharePoint 2010 to 2013

http://technet.microsoft.com/en-us/library/ff607941(v=office.15).aspx
Test-SPContentDatabase -name WSS_Content_DB -webapplication http://sitename

http://technet.microsoft.com/en-us/library/ff607581(v=office.15).aspx
Mount-SPContentDatabase "MyDatabase" -DatabaseServer "MyServer" -WebApplication http://sitename

11. Convert-SPWebApplication -Identity -To Claims -RetainPermissions [ -Force]