Template:Information/author_processing was retired on November 11 2019, when Template:Information switched to Lua version. However now two months latter there are still 28,836,449 entries in templatelinks table on Commons SQL database, indicating number of templates transcluding that template. That number can be looked up several different ways:
- with template count tool
- at c:Special:MostTranscludedPages
- direct database query quarry.wmflabs.org/query/41593
After retiring the template the content of the template was replaced so the only thing it does now is to add c:Category:Pages using "Information/author processing" template. That category reminded empty since its creation.
There is similar issue with c:Module:Date which was exported to many wikipedias under name Module:DateI18n. For consistence, the template was renamed and all the templates using the old name were corrected in April 2019. However according to c:Special:MostTranscludedPages it is still "used on 16,467,713 pages". We do have c:Category:Pages_using_Module:Date to track those pages (added by the module to all pages calling it), but it is mostly empty.