Checking "Disable Audio Components on AV Clips" does not disable the AV audio
I am fairly new to Final Cut Pro X. I have been attempting to sync audio recorded at the same time as filming, but from a DAW instead of my camera. Using the Synchronize Clips option technically works, but when I check the box to "Disable Audio Components on AV Clips" I can very clearly hear that the camera's audio was not disabled. I see no way, once synchronized, to separate the camera's audio and the higher quality audio from my DAW.
I feel like this is a bug because I can't find any other mention of this issue on the internet. I have tried checking the box and not checking the box and I get the exact same result every single time. The audio clips were simply combined when I am trying to replace my camera's audio with my higher quality audio.
I'm using Final Cut Pro version 10.4.8 on Catalina 10.15.4