Include Element
<Study OID="S.001"> <MetaDataVersion OID="MDV.001" Name="First Metadata version"> <ItemGroupDef OID="IG.001" Name="First ItemGroup" Type="Section"> <ItemRef ItemOID="I.001" Mandatory="Yes" OrderNumber="1"/> <ItemRef ItemOID="I.002" Mandatory="Yes" OrderNumber="2"/> <Alias Context="Context1" Name="IG1"/> <Alias Context="Context2" Name="FIRST"/> </ItemGroupDef> </MetaDataVersion> <MetaDataVersion OID="MDV.002" Name="Second Metadata version"> <Include StudyOID="S.001" MetaDataVersionOID="MDV.001"/> <ItemGroupDef OID="IG.001" Name="First ItemGroup (modified)" Type="Section"> <ItemRef ItemOID="I.001" Mandatory="Yes" OrderNumber="1"/> <ItemRef ItemOID="I.003" Mandatory="Yes" OrderNumber="2"/> <ItemRef ItemOID="I.002" Mandatory="Yes" OrderNumber="3"/> <Alias Context="Context1" Name="IG1"/> </ItemGroupDef> </MetaDataVersion> </Study>