"I have resolution to this.  Refund came based on the superseding return amount (and NOT the original return).  So there must be some logic somewhere in the process.  Took about 7 weeks to process.  I'm (pleasantly) surprised.  [But waiting for the other shoe to drop . . .]"

There shouldn't be any shoe dropping. It appears that the system worked....IRS got the superceded return in time to process and issue the correct refund.