Hello, I've found on different OPNsense firmware version that NAT rules are not applied until I reboot OPNsense.
Outbound NAT is in Manual outbound NAT rule generation (no automatic rules are being generated).
It's there a way to reload Outbound NAT without reboot?
Normally it should prompt you to reapply the settings after saving. If not, you can manually reload the filter under System: Diagnostics: Services. It's service "pf", a.k.a "Packet Filter".
Cheers,
Franco