Jerry Glow asked: "Wouldn't an ORER show door opening of the "reduced" size?"
Ben Hom replied:
Not necessarily. I've seen these cars listed with the original
opening listed
in the dimensional data, with a note indicating that the auxiliary
door had been
sealed with a new door opening size of ________.
Yes, and often only a limited number of cars would be converted. Thus in many entries the original series would list the original door opening with a note indicating what car numbers had a different door opening. The note could applied to multiple series so one needs to read the notes in ORER to be sure you have modeled a given car number correctly.