I’ve encountered an issue in DaVinci Resolve 20 Beta 1 (running on Mac Sequoia 15.4) when exporting audio using the “All Timeline Tracks” option in the Output settings.
Despite selecting this option, Resolve only exports a single stereo track. The only workaround I’ve found to get separate tracks is by enabling “Render one track per channel,” which isn’t ideal.
This functionality worked as expected in version 19, so it seems to be a regression in the current beta release.
Indeed, if you choose the "Audio Only" preset in the Deliver page and choose "All Timeline Tracks" as the output track, it should export all tracks separately.
However, after rendering, you end up with a single stereo file instead of individual tracks, which clearly isn’t the expected behavior.