A couple of things that I have noticed are that it doesn’t work for tele-visits, only in person visits. Also, if you upgrade you will loose the functionality to send out automated text reminders for patients booked for a tele-visit. They still get the message right before the visit but if you have advance texts (i.e. 5 days and 2 days before sending them a reminder with the “yes” or “no” to confirm or cancel) the capability is no longer there.
In short if you are using tele-visits at all you should definitely not upgrade.