Default [Q] PLEASE help. SIM card problem!

I am using 4.1.x ROMs for my phone "Micromax A110" and both SIM cards function fine but when I install 4.2.x ROMs only one works and the other remains on "No mobile Network". Others don't have this problem on their phone but why in mine? Help.
Device: Samsung Galxy SIII GT-I9300
ROM: Temasek's Unofficial CyanogenMod 11
Android Version: KitKat 4.4.4
Kernel: Boeffla Kernel 2.4 Beta 3 NG

Device History:
Ericson T28S -> Nokia 1100 -> Nktel phone (Forgot Model) -> Qmobile Noir A6 A.K.A Micromax A68 -> Qmobile Noir A10 A.K.A Micromax Canvas 2