Well, here’s the long version.
When I was working on the foley sequence by sequence, the film was still a rough cut. Now the editor has finally ‘locked picture’. Each of the sequences has changed slightly, so I don’t want to mix down any of the sessions yet. Individual clips might need tweaking or removing, especially after I overlay atmospheres and so on.
But this is surely beside the point. Is it not possible to batch convert an entire session from one sample rate to another, so the multitrack stays otherwise unchanged?