XG 18 - Gateway (dual WAN) option missing / moved?

Question

In v17 there was an option under the FW rules to select the primary and backup gateways. That option seems to be missing in v18, or it has been moved. 
 Does anyone know where it may have gone? 
 V17:

lferrara · Accepted Answer

Hi Arie, 
 you can manage the backup gateway, by creating an SD-WAN policy routing under Routing menu. 
 Regards

LuCar Toni · Answer

There are a easy and more advanced to configure this. 
 
 The easy way to deal with dual WAN is the (old) WAN Link Manager. 
 Use to weight the WAN Interfaces like 10% and 90% Usage for all traffic. 
 Or use Interface A for everything (Active) and Interface B (Backup) only in failure. 
 
 The new advanced configuration is moved to SD-WAN Routes. 
 There you can specify per User, Source/Destination, Application the Interface.

cryptochrome · Answer

Ok, I think I understand. That means for simple wan link failover, I just keep the WAN Link Manager config I have and if I need more advanced source routing, I'll use SD-WAN routing. I guess the option to override gateway monitoring decisions makes more sense to me now, too. I guess I can use it to completely disregard WAN Link Manager in SD-WAN rules. 
 Cheers