I’ve learned some things about how the report flow works. This image is from the Epicor10_techrefSystemAdministration_102200.pdf document on EpicWeb.
As mentioned in the document, Microsoft Report Server will create the report and send it back to the database as binary, though it seems to me it’s encoded binary, and soon thereafter it gets sent to the client to open the PDF viewer.
The key is that the Epicor 10 Database will have the binary stored in the Ice.SysRptLst table, in the RptData column.