Frankly, I have no idea. If the add-on is functioning normally and accessing attachments from internal_data works as it should there’s no reason why accessing anything else from internal_data wouldn’t work.
Clearly we don’t know the inner workings of the multi site add-on so we’d be working blind. It would be down to the add-on author to make it work with the abstracted file system rather than the other way around.
Clearly we don’t know the inner workings of the multi site add-on so we’d be working blind. It would be down to the add-on author to make it work with the abstracted file system rather than the other way around.