Simtoolkitpro and MSFS 2020

Can someone tell me, if there’s a youtube videos or the proper way to import a flight plan from simtoolkitpro into msfs 2020? Once I setup the flight plan I’m STKP not sure of the steps to import to MSFS2020?

Have you tried hitting load flight plan in MSFS2020 world map?

I save the flight plan from STKP but it saves it as a .pln file and MSFS2020 won’t load that type of file for some reason when I try to load it.