Hello,
This might be a duplicate question, sorry for that; though i haven’t found exact answer:
Is FileChooser working for you inside AUv3 target on iOS 17 for reading and writing files? I’ve tried it without any result; this (Reading a file in an AUV3 on iOS) also didn’t work well for me; the only solution for me was the use of the App Groups between AUv3 and Standalone but it’s a bit less user-friendly way for importing/exporting presets…
Thanks!