@daryll-swer For your use case, you can use your tables/chains (not standard names like RAW/MANGLE INPUT/OUTPUT etc.), that won't be cleared by the VyOS firewall CLI
nft add table MYRAW
nft -- add chain ip MYRAW my_chain '{ type filter hook prerouting priority raw; policy accept; }'
nft add rule ip MYRAW my_chain ip saddr 192.0.2.5 counter drop