I'm new to Cisco. Recently, I have come across an issue, when I was building an L2L IPSec VPN tunnel between Cisco ASA and Checkpoint(Peer), I have removed the existing policies on the IKEv2 Phase and added my customized profile. My work was successful but the other tunnel was down. When I checked the tunnel policies, I could see the related policies were removed, only my customized policy was there. I did this through ASDM. I have fixed it since I had the backup. Can someone please clarify why my changes were affected other tunnels?