Hi Todd_Depczynski , no, there is no toggle in the ellipses menu, I checked that, because I have other users that do have that specific toggle there. In the meanwhile I suppose that the old version was not available anymore, because someone deinstalled that version because of another issue and than installed the newest version. And I suppose (but that is really just speculation), that the newest version does not have that option to revert back, when there is no old version anymore. 

Unfortunately, I have no access to our Teams Admin Center so I can not verify the second point. Will check with my colleagues. Thank you for your support.