Leave document in SharePoint. Select this if you want Enterprise Vault to archive a copy of each document and leave the original in SharePoint.

Delete document from SharePoint once archived. Select this if you want Enterprise Vault to archive documents from SharePoint and then to delete the original documents from SharePoint.

If you select this option, you do not have the option to remove old documents from SharePoint, optionally replacing them with shortcuts. You can change this setting later, if required, by editing the policy's properties.

Prune to <number> versions of the document. This lets you control the number of major versions retained per document. If there are more versions of a document in SharePoint than you specify here then, after archiving a document, Enterprise Vault removes the oldest versions of it from SharePoint until there are this many versions.