QGC to MP file transfer method?

Hello!
I’m learning QCS by referring to various blogs.
I’d like to load the flight plan made by Q GROUND CONTROL without a drone from MISSION PLANNER and conduct a simulation flight using SITL.
Is there a way to recognize the flight plan file from Q GROUND CONTROL to MISSION PLANNER on the computer without a drone

Save your mission as a .plan from QGCS and load it in Mission Planner (only true for Missions, not for fences and rally points)