Hi FoxTerrier,
First off, I apologise if what I write below has been covered by others. I haven't read through all the posts, so I don't know if I am doubling up on information or not.
From the details on PG Music's website, it seems that Realtracks Set 28 only contains Realtracks and does not include Realdrums. I've taken the attached image from the webpage below.
https://www.pgmusic.com/realtracks.all.php?os=win&max=67&min=18#list-top Because your BIAB is not loading the Realdrums in the style, I'm guessing that this means that BIAB 2023 Pro does not include these Realdrums. I'm not certain about that, though. It could easily be confirmed with a quick chat to sales staff at PG Music using Live Chat. The 'Pro' package of BIAB is the entry-level package and it doesn't contain everything.
Realdrums are mostly sold as separate packages.
https://www.pgmusic.com/realdrums.php?os=winIf it is indeed the case that Set 28 does not include the Realdrums, Mario's post explains how to load in an alternative set of Realdrums. I'm pretty sure that you would have a swing jazz waltz set that would do the job fine. After you load in your chosen drums, make sure to save a songfile. The next time you load this songfile, it will already be set up for you to use the Realdrums that you loaded. Simply changing the Realdrums does not overwrite the base style file. This means that next time you load the style, you will also need to add the Realdrums manually.
Here is the link to Mario's post.
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=842932#Post842932I hope this helps give some insight.
--Noel