Whether BIAB shows the chord as A2 or Asus2 depends on the selection of choices in Display Options. I've highlighted these on the graphic below.
At the end of the day, though, whatever is displayed (i.e. Asus2 Aadd2), the chord is an A2 -- as shown in the list of substitutions that Matt posted.
Regards,
Noel
Actually, this isn't true. While I'm able to change the display of an A2 to an Asus2 and of an Asus to an Asus4 (per your suggestion to right click on the Chord sheet and select "Display Options"), this would only eliminate part of the confusion that's occurring with these chord names and BiaB's chord mapping algorithm. What's still left is the Aadd2 chord, which is not the same as an A2 chord because BiaB considers an A2 chord to be the same as an Asus2 chord (excluding A2 chords that are in an XML file, of course). That's the basis for the ability to change the display option from an A2 to an Asus2. However, an Aadd2 chord sounds very different from an A2 (or Asus2) chord because it contains an additional note (the C# note that is part of the standard A chord).
So, I don't have a problem with BiaB mapping an Asus2 chord from an XML file to an A2 chord or even an Asus4 chord from that same file to an Asus chord because I can use the Display Options to revert back to the original chord names. What I do have a problem with is BiaB's mapping of an A2 chord from that file to an Aadd2 chord because it just doesn't follow the rules and causes confusion. All I can do at this point to prevent this from happening is to not use an A2 chord name at all in MuseScore but instead to use an Asus2 chord name. I also need to avoid the Asus chord name and use the Asus4 chord name instead in MuseScore. The same would be true for all other versions of these same chords (C, D, E, etc.).
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