Question for Revit gurus out there.

I use keynotes extensively for both Elements and Materials and have a really comprehensive identification system.

I've just started using the Multi-Category Schedule function as a means to create an 'all-in-one' schedule that is part of each Revit file (instead of having a separate external file e.g. Excel).

The Multi-Category schedule works perfectly for displaying the 'Element' keynotes and their related information, but it doesn't show the 'Material' keynotes (even though they share the same 'Keynote' parameter.)

I find this odd as the keynote legend will pull up both Element and Material keynotes if they are called up on a sheet.

I know that Revit has it's own 'Material Schedule' function but I'm trying to just have one schedule controlled purely by keynotes.

Thanks in advance.