An error occurred while saving the commentSteve commented
Just in case it help anyone else I was also annoyed that all contacts are dumped together in Teams, under "Calls/Contacts". HOWEVER if you look at "Calls/Speed dial" and minimise the first group called 'speed dial', you will see the remainder are the original groups from a corporate skype sync we had done (note it is not a live-link, so best to swap entrely to Teams before Skype is made redundant). Granted the folder title is misleading! There is also a button to create new groups. I can't help if the contacts are not syncing in the first place!