"But when I select the piano track to substitute organ, only two choices are showing. No Jazz organ real tracks."

From your report, Biab is finding these Realtracks in the folder that you have specified, but the issue is that you are expecting more than two organ Realtracks. Are these jazz organ Realtracks in your Realtracks fokder, and if not, how do you expect Biab to find them?

You have made this comment " No Jazz organ real tracks.
I see them in my folders outside of BIAB though."

Does your Realtracks folder have these jazz organ Realtracks or not?

If you upgraded, but decided to preserve your old installation, instead of the intended process of overwriting(and adding to) the old version, then all of these issues would be expected to occur, because the update doesn't include all of the old files that you bought before. So you would need to add those old Realtracks folders in.

Have Fun!
Peter Gannon
PG Music Inc.