We are moving from Documentum to SharePoint 2013, and are trying to test whether we can check out a Word file from a SharePoint library and then when I check in the file, overwrite it with a PDF version of the file I checked out, essentially changing the file format, but retaining the unique document ID number (the link which may be in other documents and sites).
Is this possible? This type of scenario is possible in Documentum, but looks like it is NOT in SharePoint because once the file name / type / extension changes, that's a new document in the library.