When an attachment is present within an e-mail, Microsoft Outlook presents this to the user as a paperclip icon. In the instance where the attachment is embedded within the mail the paperclip icon is removed when the mail is archived and turned into an EV shortcut.
No error is presented to the user
This issue has been addressed in the following releases:
Enterprise Vault 10.0.4 Cumulative Hotfix 3 Release
Enterprise Vault 11.0.1 – Release Details
Exchange 2010 and above with all supported EV versions.