Hi Jody,
In order to purge history in PO, the entire 'set' of documents (PO/Receipt/Invoice) must be older than the specified date in order to be purged. If the PO and Receipt are older but the Invoice is not (for example) then the documents will not be cleared.
The two different Receipts tabs are based on different data files in PO (the Primary vendor list is the Header file, and the All Vendors is the Totals file). I could not replicate the problem you indicated with sample data. My suspicion is that the History Header file was purged for you, but not the History Totals file. There may be a network or environment situation that you may want to investigate with your Adagio consultant. Also it would be good to know the results of the DIC - I suspect that orphaned Totals records will be found, and Rebuild will remove them, and of course doa backup of the data before ever performing a Rebuild.
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Regards,
Softrak Tech Support