They don't post that they received RCMP police check. I send one in April and called twice to CIC. First time they told me that they cannot confirm if they received it or not because they cannot access my file to get such an info. Second time, lady told me that she cannot do it (usually) but she can make an exemption as she knows it might be very stressful for me. So she check and confirmed that the file was attached to my application 2 days after they received via fedex. She said that they don't post notifications to ECAS about receiving RCMP or other documents. They post only usual info as we all see in ECAS.