Endevor supports sourceless elements. A sourceless element is like a linked element pointing to an existing one in a higher stage. A sourceless element can only be created in Endevor using the Generate command with the Nosource option.
The synchronization process from AccuRev to Endevor will never create a sourceless element in Endevor.
If Enterprise Sync detects a sourceless element in an Endevor stage mapped to an AccuRev stream, then Enterprise Sync synchronizes the corresponding physical file to AccuRev and associates the Endevor metadata of the sourceless element.