Recently it was discovered that several of our production Discoverer workbooks has duplicate worksheets in them. I.e. there were two or more copies of each worksheet in the workbook. Each workbook showed a last modified date more recent than when the workbook was migrated to production. The copies in our QA environment did not have the duplicates. So, it does not appear to me that the duplication happened when the workbooks were migrated, but at some later time. How does the last modified date get changed when the owner of the workbook has not made any changes? And does anyone know what sequence of events would create the duplicate worksheets? This is Discoverer 18.104.22.168 and an Apps-mode EUL, although I'm not sure that has anything to do with it.
Also, I note that Discoverer Plus will not permit you to name two worksheets in a workbook with the same name, so I don't see how we could have accidentally created the duplicates through Plus.