HA failover on WAN interface

Hi

I have a pair of Balance 380s configured in HA mode and I have two ISP links, pretty much as in this link.
http://www.pantec.net/pdf/ht7.pdf

What happens in this scenario if I have failure on a WAN interface between the switch and the Peplink? For example, someone unplugs a cable between WAN1 and the switch so that WAN1 is down for the primary but not for the secondary. Will the secondary take over? The documentation doesn’t cover this scenario.

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In this scenario if WAN 1 goes down the master will fail its health check for that WAN. The following criteria will cause an HA failover:

Hardware failure or no power.
LAN down.
All WANs down.

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