The AAFILES.DIR file has been replaced by files of unique names for each
area:

AAFILA.DIR for KER: (Tape A)
AAFILB.DIR for K2:  (Tape B)
AAFILC.DIR for K3:  (Tape C)
AAFILD.DIR for K4:  (Tape D)
AAFILE.DIR for K5:  (Tape E)

etc.