Make shure you have MSFSToolkit plugin enabled before importing the default A320N model.
Click on Import, and select MSFS glTF option to import.
Always import the highest model resolution possible: i.e. the file A320_NEO_LOD00.gltf
Look carefuly if all Objects are visible, and then hide the ones you don’t need. The Reactors (engines) should be there.
NOTE: Importing the model from the game folder, you will guet a messy project. But don’t worry, just hide those unneeded objects and you’ll be fine.