Muted multitrack session, level bar is missing

[Sonja31283926hr69]

I want to save a track as a multitrack session in Audition 2023. I have the problem that the audio can be heard in the waveform but not in the multitrack view. In this view, the level change can be seen to the left of the track, but not at the bottom of the level bar. When I want to export the multitrack as an MP3 file, I get a silent file, although the sound for the track as a whole is switched on. It is not muted out. Can anyone help?

[SteveG_AudioMasters_]

Make sure that the tracks you want in the mix are routed to the Mix (or Master, depending on the template you used). If a track is routed elsewhere (like a hardware output), then it won't make it into a mixdown.