How to import swim lane from one activity diagram in another activity diagram

WELL as usual does not work as expectd
Is it possible to import a swim lane or vertical partition from one activity diagram in another existing diagram?
That import sequence diagram does not do it.

WHAT A pile of crap click on add sequence diagram in a partition and choose existing activity diagram and ROFL IT SHOWS PARTION NAME TAB THEN THE ACTIVITY DIAGRAM CHOSE AS A SWIMLANE. ROFL THEN GO BACK TO THE ORGINAL ACTIVITY DIAGRAM ONE WOULD EXPECT T SEE THE ACTIVITY DIAGRAM CHOSEN IN THEPARTITION. NOPE NOTHING WAS SHOWN

You can drag & drop the swimlane from Model Explorer (View > Panes) into another diagram to reuse it.