Cab,
the reports wiki is in a state of benign neglect, because of development of _mana_, which will create a way for reports to be shared to and imported from a central server.
See
We're still adding queries to the report library and fixing reports as we find out that they're broken, but we haven't bulk updated the reports to reflect the biblioitems.marcxml -> biblio_metadata.metadata move in 17.05 for instance.
Bug 17047 is currently signed off; if you logged in and added a comment to the QA team that this was a priority (and possibly also added a vote (next to 'importance' on the bug page), that would help move things along. :-)
--Barton