Receipt Routing receiving

We are having problems (World A9.2) with a specific item number that is not getting received into RR. Instead, the item is being received directly into stock. In other cases like this the problem is that the Supplier Item setup for the RR Route Code setup has been missing. This is not the case this time. We have checked the Item Master setup as well. This item appears to be setup like other items that are getting received into RR. Other items on the same PO will get received into RR with no problems; this one item will not. What