Export and Import Document Library in Same Subsite with PowerShell

Hi all, I export my subsite document library by using Export-SPweb includeUserSecurity and includeVersions All.  The URL of the current document library is http://acme/sites/it/doclib.  I would like to make a copy for this document library in the same site with URL http://acme/sites/it/doclib2 by Import-SPweb with includeUserSecurity, is that possible?  The reason why I would like to do this is preserve meta data of the copied document library instead using open document library in file explorer to do the move because it does not preserve meta data.  If not possible by using import/export what are other options?  My document library is ~2GB.

Thanks

Tee