Design Copy in SMARTEAM unnecessarily copies
child objects even when the parent object is deselected in the Design Copy
dialog window.
This is a known issue with Design Copy and it has been resolved in
SP6 for SMARTEAM V5 R20.
Please see the following articles from the Dassault Knowledge Base:
Dassault
BR Article #: BR10000103101
Dassault BR Article #: BR10000103151
Dassault BR Article #: BR10000105331
Dassault BR Article #: BR10000106255