Not quite so fast... turns out this little feature only works if you have more than one basline in your corridor. Bummer!?
Now for the work-a-round... Simply place another baseline in your corridor, you must have an alignment and profile, however just do not put in a region.

This keeps the corridor from trying to create anything, yet gives the ability to use the new amazing feature "Corridor Extents as Outer Boundary"
Till Next Time...
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