How can I move a subassembly using 'move tree' in epdm without copying the original folder?

Hi all,

I have just tried moving a sub assembly ( without moving any of the parts in it ) using 'move tree' in EPDM, but it seems to have made a copy of the original folder and placed it under the new folder (!!?)

How can I prevent this happening?

Thanks.

SolidworksSolidworks Pdm enterprise Pdm