Mapping audio export

Hi everyone,

We do a lot of exporting from Adobe Premier/Adobe Media Encoder and often we have to define the audio tracks.
Currently in Adobe Premiere Pro we can only export audio tracks or less (timeline has 4 tracks and exports track 1 and 2).
But it is not possible to map track 1 to channel 3, track 2 to channel 4, etc. See adding video tracks: the timeline has 4 audio tracks and we want to export 8 audio tracks. This problem is especially true for Apple Pro Res/.MOV exports.

Would it be possible to add such a feature? To be able to map the tracks of the original timeline/element to new tracks for export? While being able to have more tracks in output than in input? For example by duplicating track 1 and 2 to track 3 and 4?

Best