On standard Auslander-Reiten sequences for finite groups

Let G be a finite group and C a complete discrete valuation ring of charact eristic zero with maximal ideal (pi) and residue field k = C/(pi) of charac teristic p > 0. Let S be a simple kc-module and Qs a projective C G-lattice such that Qs/pi Qs is a projective cover of S. We show that if S is liftab le and Qs belongs to a block of CC of infinite representation type, then th e standard Auslander-Reiten sequence terminating in Omega(-1)S is a direct summand of the: short exact sequence obtained from some Auslander-Reiten se quence of CG-lattices by reducing each term mod (pi).