A network engineer manages a Cisco Catalyst SD-WAN fabric where two data-center sites (VPN 20) exchange east-west traffic across MPLS and biz-internet transports. An application-aware routing policy is configured to keep latency-sensitive database replication on the MPLS color when its SLA class (latency < 50 ms, loss < 1%) is met, and to fall back to biz-internet otherwise. Users report that replication traffic is traversing biz-internet even though MPLS monitoring shows latency of 30 ms and 0% loss. On the edge routers, 'show sdwan app-route sla-class' shows the MPLS tunnel meeting the SLA, but 'show sdwan policy from-vsmart' does not list the app-route policy under VPN 20. What is the most likely cause?