Hello,is there no possibility to reconnect the AP and ATS via yoke? Its very unusual to press the Autoflight Button with the mouse while TO or landing.Regards Mike

The yoke button is only used to disengage the autopilot. All you need to do is bind a key to the Autoflight button which is located under PMDG Menu under keyboard commands, subsection FCP. There you will find the Autoflight entry and can assign any key you like.