Today’s water cooler discussion revolved around Document ID management system of SharePoint. It is a nice feature and can actually help to find the documents quickly and in a predicted manner. Basically you get a short URL in SharePoint for your document, rather than a cryptic one and SharePoint will find the document no matter where you moved it.
But there is a catch, it will be able to find it if you move it within the Site Collection. If you move it out of the site collection, a new Doc ID will be generated and assigned to the document. BOOM!! your short URL is pointing to nothing now.
So how do we move documents without changing their Doc ID?