How to move Datasource from Unassigned Nodes

Hi Experts,

I have activated 3 master data sources (0Orgunit_Attr, 0Orgunit_Text, 0OrgUnit_HR01_Hier) from HCM for Info Object: 0OrgUnit. When i replicate these data sources in BW it moved to Unassigned Nodes. My question is can i move these data sources from Unassigned Nodes to any application component.

The second query is when i try to create transfer rules for 0OrgUnit Hierarchy i can not see the data source: 0OrgUnit_HR01_Hier.

Can any one explain why its happening like that or Is there any helping material i can follow?

Thanks in advance.