eDiscovery of files shared in Teams Chat (Private & Channel)

Hi. Am trying to find out the best way to use SCC eDiscovery (E3) to discover files that were shared in chat. My understanding is that you can't identify the version of the file that was shared. This is a pain, but am also struggling to identify even how to export all versions of the file that was shared in Teams chat. Anyone have any ideas please. Thanks @ediscovery