database.sql file in site's root directory does not get deleted from remote web servers after site migrations

The database.sql isn't being deleted after site migrations -- not from the remote web servers, but only from the Aegir server.

According to the task log:

Found database dump at /app/aegir/platforms/1.4/sites/
Database dump at /app/aegir/platforms/1.4/ is readable
Removed dump file /app/aegir/platforms/1.4/sites/ after restoring from it

My questions are:

  1. Is this file needed on the remote web servers? Or can it be safely deleted? It appears in the the backup archives on the aegir server.

  2. Is there a feature in Aegir that we have not enabled that can delete this from remote web servers?