This Bug came out of the fact that indexes were used a wrong way in record.abs
Please consider correcting record_usmarc.abs
Indeed indexes were used :
melm NNN$X Myattribute !:w,!:p
This prooved not to work on indexes.
It took only default (w) index for Myattribute.
So Please, correct your record.abs, reindex, and sorting by publication date will be fine.
Signed-off-by: Chris Cormack <crc@liblime.com> Signed-off-by: Joshua Ferraro <jmf@liblime.com>