The SCP feature works on routers however it doesn't work on interfaces which have VRF enabled on it. Since the management interface on the ASR is pre-configured with the VRF and this cannot be removed, it is very important that VRF-AWARE SCP work on ASRs. This document explains how to get it set up.
For using SCP on a VRF enable interface you will need to do the following:
1) Configure SSH
2) SSH source-interface must be configured (i.e ip ssh source-interface Ethernet1/0). It is required as SCP uses SSH for connection.