Hi, Marion,
The Receipts tabs do not use the same color-coded buttons available on the POs and Requisitions tabs to color-code documents and collapse completed documents.
Assuming the document's data flow has all been completed, you could use the Tools | Archive Documents function to move the Inv/Adj and its entire data flow (i.e. associated Receipts/POs/Requisitions) to History. What gets moved is also dependent on the settings on your History and Tax tab in the Company Profile.
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Regards,
Softrak Tech Support