I had to do the same thing with the PIC18F14K50.
Our entries look similar except your label is RABC_INT.

Code:
#define RAB_INT   INTCON, RABIF   ;-- RAB Port Change, Added 3/15/14 for PIC18F14K50
and

Code:
  ifdef RABIF    ;----{ RAB Port Change Interrupt }-----------[INTCON, RABIF]--- (Added 3/15/14 for PIC18F14K50
      INT_Source  INTCON,RABIF, INTCON,RABIE, INTCON2,RABIP 
  endif
Could it be you're not enabling it with:
Code:
INT_ENABLE  RABC_INT   ; Enable IOC