Within the above menu & feature, we can route packets to a specific WAN interface based on source/destination IP

However, once we disable / delete that route, it never gets removed/disabled - the routing continues, until we restart OR we add a new rule with the expected condition.

e.g. 

Assuming we have 2 WAN interfaces - WAN1 and USB

We set all connections from 192.168.1.2 to be routed through USB. I enable it and later decide to disable it temporarily or delete the rule. After this action - disable / delete is done, it still keeps routing the connections to secondary WAN - USB just for this ip.