Hi Igor B,
you need to set the corresponding Jive property on each AppNode like so: jive set webapp.app_cluster_jvmroute AppNode1 (see Configuring Session Affinity on a Load Balancer ).
Otherwise the loadbalancer adds your AppNode1 string to each JSESSIONID, but the application wont understand this and will generate a new JSESSIONID for each request (because the other one can not be found), which is obviously the case in your current setup.
Hope this makes sense,
Sorry, I'm also not the owner document. Think you should find this on the current Jive Admin Documentation...