VPN is down after ISP Redundancy link switch

[mikdemin]

I added a new external link on my GW and activate ISP in Primary/Backup mode. Also i was renew certificate on my GW and added new external's IP into Alternate IP Adresses. When i switch new external link to primary in ISP VPN tunnel to central GW is down, but ping from new external to external interface in the same network on central GW is ok. How i can investigate this issue?

[PhoneBoy]

May want to validate the configuration described here: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...