creating one component as one part

Altair Forum User · 2016-06-08T17:24:47+00:00

I am trying to combine several part (surface and solid) in to one part. How can I do that? After I move several component to one component and exporting it as STEP file and opening it in different software , I do see that those parts exist (i.e. they are not merge as one part). How can I fix this issue?