So glad people are finally getting to enjoy this! You're right about the lack of tracking, but there is one exception in JAWS 2: the beginning of "Fire On Board" is tracked over the start of "Sinking The Catamaran." In the original JAWS, part of the "Wild Shark Theme" that ends Disc 1 was tracked over a section of "The Pier Incident."
You're right, I forgot about these.
In the case of Jaws 2 there's also the case of the extended TV version that had to track music for the scene of divers finding the camera (a section of the main title) and the underwater footage of the hellicopter attack (the water skier).