How to report on event data in Req history

Summary

How to report on OLF and Department updates to a Requisition using History events

Content

We are looking to build a report that can be used to audit when a requisition was updated (OLF or Department fields).  These types of events are documented in requisition history, and we can see them using Requisition Transaction History in OBI.  However, when we use the fields in that folder, it produces dozens, if not hundreds, of rows per requisition, and the dates do not align with the actual event history shown on the front end of the product.  Has anyone else built something similar, and would be willing to share a sample report?  I'm thinking we need some