I have an interesting thought...
Schema Map can have more than one object. (GW driver is the one that
shows this in the default config, and uses a rarely used token, Rename
Can you have more than one map object, and say map everything but one
attribute, then have a second map object that maps additional attributes?
Are the cumulative? What if the same attr is mapped in both? Is the
latter in the list the one that takes affect?