NOOB, Elastic Stack (Search/Logstash) Netflow Cisco SD-WAN

I've been using an ELK stack for Netflow collection for roughly 1.5yr with my Cisco environment. Recently I've migrated onto SD-WAN and am sending my netflow data to the collector but for whatever reason all I'm seeing is ICMP flows... and most recently it has bombed out and now I'm not seeing anything. I've restarted both logstash and kibana but still no output. Looking for assistance, Thanks in advance!

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