Until 1990s, CNB-LKO/LJN was parallel BG and MG.
CNB-LJN MG was under LJN div, NER
CNB-LKO BG was under LKO div, NR
after GC, complete jurisdiction went LKO, NR.
.
so...
more... NER jurisdiction of CNB-LJN vanished off but CNB(excl)-CPA-RPO(incl) was stil under NER, LJN.
it was dcyd dat CNB(excl)-CPA-RPO(incl) wud given 2 IZN div but employees were not ready and dey denied .
n thus LJN div, NER isolated route CNB(excl)-CPA-RPO(incl) exists now. :-)