I would guess the route is automatically displayed in brown between ABQ and CME by Jeppessen, because of the thin band of mountains that rise over 8,000 feet just east of ABQ. But pretty much every where around there the rest of the terrain is much less (5,000 or lower as you head east). So you don't need a DD or TC release. If an emergency happened when you were over those mountains, you'd just go back to ABQ or press on to the east, and would be clear of all high terrain either way.
But I could be wrong.
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