Maybe we can address their concerns with our platform Open Social (getopensocial.com) as they use Drupal for most of their platforms already. I think we can get some data our of Workkplace trough https://developers.facebook.com/docs/workplace/reference/gra... - would be an interesting case for a migration tool..!
Besides the fact that it makes no sense to import Facebook-style data into a chat, doing so would only be useful if more than a tiny amount of the data in Workplace was actually worth keeping.
