Reply to Trakor 2 deck control question?

I just need to clarify this with someone. If I use one turntable timecode on channel A and and set the input in Traktor to have channel A assigned to Decks A & B then when I load a track into the deck thats not playing it will switch the playing track into internal mode is that correct?
If so how or can I do this manually with midi so I can jump back & forth if want?