Can't edit ink file with Unity open

I'm using the Ink Unity Integration, and I am unable to edit and save my .ink file while Unity is open. The auto-compilation feature is great, but it kind of ruins the convenience if I have to close Unity every time I want to edit the script. Even when I disable the auto-compilation and json handling in the Ink settings, it still won't let me save the ink file with Unity open. It just keeps saying the file is open in another program. I'm not sure what's causing this behind the scenes, but it would be awesome if saving with Unity open was possible. Thanks!