Dahdi digital hardware screen isn't displaying correctly the setting digitak hardware configuration

It seems on dahdi digital hardware screen isn’t displaying correctly the setting of dahdi hardware configuration.
Just in case if set CAS mode dahdi digital hardware still showing CCS/CRC4.
It seems dahdiconfig module it refers to framing var item, gathering from dahdi_scan result but the strange point it becomes dahdi_scan it report 2 item refering to frame item, framing_opts=CCS,CRC4 framing=CAS.
So question becomes, what’s wrong? dahdiconfig module it refer to framing var where dahdi_scan it report correct value why it displayed framing_opts value?

/etc/dahdi/system.conf

Span 2: WCT1/0 “Wildcard TE122 Card 0”

span=2,1,0,cas,hdb3
cas=25-39,41-55:1101
echocanceller=mg2,25-39,41-55

Global data

loadzone = us
defaultzone = us

dahdi_scan
[2]
active=yes
alarms=RED
description=Wildcard TE122 Card 0
name=WCT1/0
manufacturer=Digium
devicetype=Wildcard TE122
location=PCI Bus 05 Slot 01
basechan=25
totchans=31
irq=0
type=digital-E1
syncsrc=2
lbo=0 db (CSU)/0-133 feet (DSX-1)
coding_opts=AMI,HDB3
framing_opts=CCS,CRC4 <------ dahdi default value
coding=HDB3
framing=CAS <------ current setting on system.conf