Problem WAN Failover Mikrotik

RouterOS Beginner Basics
1

Hello friends, I have a router Mikrotik RB951g v6.31.
I have currently running at 2 ISPs (WAN1, WAN2). I have configured a failover, so that when WAN2 fall, continues to operate with the WAN1. WAN2 has a Distance 2 and Distance WAN1 one of 3. The problem that I have is that when WAN2 falls, I switched to the WAN1 to Distance1, but when WAN2 is restored, I will not change in the Distance WAN1 therefore continues to operate with the WAN1 until you manually change the Distance.

Can someone help me out?

Thank you so much!

2

If you change the distance manually it is obvious that you have to do it manually again.
But you better post here your IP configuration and your route configuration. Also, what kind of connection are you using to connect to the internet (pppoe, dhcp, IP)?