Stereo out on Internal-1

[Scoot]

- Bring in an audio track into metro.

- open plugins and effects window and drag across AUMatrixReverb for example.


Should the Stereo Out above the name of the plugin read Internal-1 or Built in Audio-1?

The audio track in the sections window still reads Port: built-in audio controller.

If I allocate the track to an output it changes the effects window setting from Int to Built in.
Is this just metro's automatic selecting?