The first time you do a landing challenge you always have to figure out what configuration the plane is currently in (e.g. flaps, landing gear, prop RPM, mixture, AP…), which is also not consistent between different challenges. Since this is something you would know if you did a full flight, I’d suggest that you spawn with active pause so you have time to get accustomed to the situation before you start the flight.
This would also be helpful for wind challenges, where it is extremely beneficial to enable the wind display on the Garmin systems - but unfortunately you have to do this every time you do a challenge.