High Availability - Connection mirroring sync when a device is rebooted

Hi,

 

We have a active/standby configuration, and have configured connection mirroring on VS and SNAT.

 

Version is 11.5

 

When we rebooted the active server A (failover testing), server B became active, and failover was seamless.

 

Then we forced server B to standby, to keep A as active. Here, the connections were reset. We did the same procedure again, and checked "tmsh show sys connection", and could see the sessions were present on B, but not on A (after it came back as standby after reboot).

 

Is this expected, or is there some way to force full connection mirror sync after a device has been offline?