Feature Requests: Imprint within selection & export all layers to audio file

Apologies if I missed how to do this, but as far as I can tell the cast and mold function only works on whole layers. It’d be great to be able to select where to apply the processing. I.E. only on the mids, only on this section, only on certain notes.

Also, if you imprint a bunch of files, then having to export each one individually takes a lot of time. An “Export all Layers” function would be amazing!