Several comments here recently about people buying the latest Xtra Styles but not having the required RealTracks to use them. Here is a solution.

For every style, program a backup default RealTrack that is included in every BIAB since RTs were invented.

So, if new Xtra Style "2021 Country Gold" requires a drum RT that was only included in Biab 2021 Ultraman upgrade, automatically select an older mostly compatible RT that the customer does have.

Or, when the new Xtra Style is loaded check for missing RTs and have a wizard that guides the customer through selecting their desired replacement RT.