it seems these are going to happen.
12949/50 is cancelled forever. hence 22905/06 may get 12949/50 number.
22959/60 :- some M/E train of WR converted to SF may get this number.
(may be 19033/34 Gujarat Queen).
22961/62...
more... : - some M/E train of WR converted to SF may get this number.
(may be 19035/36 ADI-BRC Exp as BLDI-BRC Exp via ANND-ADI-MSH-PTN)