Thanks Jim,
I appreciate that there seems to be no way to check RT's now. But it would be useful for future reference to know which RT is in which download. Is there a list anywhere?

If not, how do I identify which realtrack is in which download?

Is it as simple as the first two digits of the RT displayed in BIAB ties to the first two digits of the download? (RT's 3197 & 3199 are in download 310 in this case.)