SharePoint site movement error

Getting below error while moving SharePoint site to new DB by using STSADM -o mergecontentdbs

Error Message --

Another site already exists at /Site. Delete this site before attempting to create a new site with the same URL, choose a new URL, or create a new inclusion at the path you originally specified.

Managed path is Explict inclusion, is that causing the issue?

Thanks ,

Anoop