\c and \s not being imported into SAB

We’re using Hear This and Audacity to add audio files and labels to SAB. But for some reason, chapter numbers (\c) and section headings (\s) are not being imported/added to SAB. They’re just missing, even though it records fine in Hear This and shows up in Audacity. Any idea how this can be fixed?

I am happy to have a look, but I’ll need some of your data. I’ll contact you by separate private message.