Index "Number Style Override" not working on multivolume works
InDesign is not recognizing "Number Style Override" on a book document with seven documents. Only recognizing the overrides on the document in which the index is generated. Major suck points there.
I'm running Mac OSX Mojave, 10.14.1, on a MacBook Pro Retina 15-inch from mid 2015. InDesign CC 2019.