No suspension from regular duty. Most will be withdrawn. In AJJ shed there are WAM4s decommissioned. They will be withdrawn most likely. WAM4s are being reduced in some sheds, but for AJJ WAM4s are still healthy. They will be restricted to Shunting/Departmental duties.
--Update--
They are getting moved to short distance passengers. AJJ WAM4s are in good condition, so they are still going to be in service for a while.