pfSense

I have created VPN tunnel. It is SiteToSite OpenVPN.
Both side have CARP Cluster with 2 ISP each.

ServerA1 (FW-AmuProd) VPN Tunnel ServerB1 (FW-AmuAT)
<------------->
ServerA2 ServerB2

I have few situation that Status: OpenVPN doesn't show established tunnel between two sites but it should. I can ping both sides. I have a routing to subnets SiteA and SiteB.

Right now I have this situation.
On Server side (I was reboot Master Server - ServerA1 , CARP switch to ServerB1, VPN tunnel was established again. When ServerA1 booted it was automatically switched as Master. Also I have successfully established VPN tunnel again)
after this I have a connection to ServerB1 / ServerB1 from ServerA1 , but in doesn't show in Status: OpenVPN - Peer to Peer Server Instance Statistics.
On client side I see Connection in Status: OpenVPN Client Instance Statistics.

I can ping from ServerB to ServerA , and from ServerA to ServerB.

OpenVPN on Server Side telling me that I don't have a VPN tunnel but it is. - ITs not OK.
OpenVPN on Client Side telling me that I have a VPN tunnel. - ITs OK

When on Server Side I will manually restart this tunnel, VPN tunnel will be establish again and I will have it on Status: OpenVPN