The 6F50/6F55 transmission is the "standard" 6 speed transmission on the 2106 Edge. Your dealer can confirm that's what you have.
We are towing a 2016 FWD Edge Titanium with a Blue Ox base plate, Aventa tow bar and Air Force 1 Brake system. All-in-all it's a great tow vehicle. Note: The Edge is one of the more difficult vehicles on which to install a base plate because the whole front end has to come off. Not a good DIY project.
The only change we made to Ford's instructions: we had a battery charge line installed so we didn't have to disconnect the negative side of the battery. I called Ford Customer Support to confirm that the negative disconnect is to prevent the battery from going dead and not to protect the transmission or electric power steering. Good luck.
Bill & Lynne
2017 Anthem 44B - Victory Blue
2016 Ford Edge Titanium