Hello:
Ralph's suggestion is a good one because it shows how to use the Source Journal report, an under-used feature in Adagio.

Another option would be to click on the "View" button on the main Ledger screen, locate the AP control account, drill down on it, make sure that the source journal is displayed as a column and then export using the ExcelDirect button. One the list is in Excel, use its filtering capabilities to examine the Source Journal column. Note that you must be using a Ledger version released in the past 2 or 3 years to see the ExcelDirect button.