buffer @file dependencies don't seem to be picked up by export or in project view

So I'm currently struggling to get exporting of audio file dependencies to work with RNBO.

I have a main patch, with an rnbo~ abstraction that has multiple buffer~ objects inside, and it works as expected with either the audio files being in an external folder that's added to the search path, or if I manually add the files to the project.

If I export the rnbo abstraction though, then despite having the Copy Sample Dependencies checkbox set, I don't get anything in the media folder in the export, and the dependencies.json file is just an empty array.

I'm also not seeing the samples shown as dependencies of the main patch, which the docs about rnbo and max projects seem to imply I should be. https://rnbo.cycling74.com/learn/max-projects-and-rnbo

I've tried various different itterations of all of this, with the rnbo patch being a separate abstraction, or just a subpatch, and with media files explicitly added, in separate folders in the search path, and with/without consolidation but nothing seems to work.

I know that I can work around this by setting dataBuffers from within the javascript, but I'd prefer to be able to use the built in dependency management stuff, so any help is appreciated.