The RNAV 18 approach loads from BIDPE at 2600A, COLIG is not loaded as part of the RNAV 18 approach procedure and it does not have to be flown from COLIG. COLIG is loaded as a transition if desired. There are 2 others.
It all depends how pilot chooses the approach to be loaded, if he loads it as "vector for final" then yes COLIG won't be there, but any other selection will load COLIG as all transitions pass through that point.