I've always had an IPSec tunnel between two Mikrotiks (using public IP) and everything has always worked well.
Today I had to change one of two public IP designated for tunnel, I updated the configuration with the new IP in the peer, the NAT, the Route etc.
The Peer is established correctly (Active Peers > State=established). The problem is that the Installed SAs still remain with old IP, so the Phase 2 is not successful.
I've already tried to reboot both Mikrotik and also use Flush button, but the Installed SAs still remain with old IP.