Yes Export posed includes all morphs currently dialed on. Baked into the exported shape. For importing any thing created in zBrush I just GoZ it into poser. GoZ works both ways. Open it in zbrush. Have an empty scene open in Poser and GoZ from zBrush. Poser will ask if you want to create a prop.

I don't normally create in Zbrush so maybe one of the Zbrush so maybe one of thee experts will chime in.