Importing step files recipe

Hi Everyone!

I am completely new to this community, but I see that questions asked here are always very well replied, so decided I will try it out.

My problems is that I download CAD files from sources like GrabCAD and these are very often in step format. Since NX support several step formats (step203, step214 and step242), I dont now which version to chose and have to go through all of them until the part finally shows up. Is there somekind of recipe on how to do this or somewhere to find the format version?