Import a Step File and save as a single part

[isocam]

Can anybody help?

I have imported a step file of a pump unit into Fusion 360 and saved it OK.

I have created, again in Fusion 360 an assembly and inserted the file.

When I try to join the part to another, I cannot get it to move the entire pump unit in one go, only the part of the pump unit that I have chosen to join to another part.

How can I join the entire pump unit in one go to another???

Is there a way of saving the step file (containing many separate parts) into a single part so that I can move it in one go?

Many thanks in advance!

Darren

[jeff_strater]

if your only goal is to get it to all move together, use Rigid Group, and select the entire pump assembly.  This will not, however, produce a "part", but instead a rigid assembly.  Producing a single "part" (does this mean a single Body to you?) is more complex, and requires the use of the Combine command, and may not actually result in a single body, if the pump has tolerances built into it.