Imported file in slicer is different from stl file in Fusion

[prpetry56]

Designed a part in Fusion 360 (1 body) saved it as an stl file.

When I open the file in Creality slicer, the part is different. Not talking about size.

What could be the reason?

Thank you.

[TheCADWhisperer]

@prpetry56 

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

Can you Attach the resulting stl fille here?

Can you post image of what you see in Fusion and what you see in your slicer software?