Check your setting for 'Send most recent controller' in MIDI Prefs.
See image below.
This should set the mixer to the correct settings for a given point in a song by checking for the control change(s) located before the playback point and setting things to there before playing back.

If this doesn't fix it try entering a Control Change at the beginning of the song.
The Event List can do this. Try entering Controller 7 and set the volume to whatever you want for the start of the song. Then when you rewind to beginning it should reset.

CC7 generally controls those Nodes. In my experience the nodes show in the Event List for manual editing, and dragging nodes changes them in the Event List.

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