Mail Source Agent shows Warning -2130313199 Link to message/folder cannot be migrated. Cannot ope (4246465)

The Mail Source Agent shows the following warning in the log file:

CCopyMsg::PreProcessLinkToMsg           Warning               -2130313199       Link to message/folder cannot be migrated. Cannot open entry ID

The warning means the e-mail item being processed by the Mail Source Agent has got an attached e-mail message that has been already deleted. Thus, the Mail Source Agent cannot get a link to this attached e-mail and copy it.

The warning can be safely ignored.

The e-mail item will be synchronized to the target mailbox without a link to the deleted attachment.