iRules LX config sync in cluster with workspaces, how?

Hi all, A customer of us is using with success the iRules LX and he likes it very much to do some REST-API security. Now he has a iRules LX workspace which is located in the path /var/ilx/workspaces. He is using a Big-IP cluster and is doing a config sync to the standby node. Unfortunately the iRules LX workspaces are not synced to the other machine... BigIP Version is v12.1.1.

 

Since I couldn't find any information about iRules LX and clustering I ask it here: How should we proceed when the active cluster member is down and the created iRules LX?

 

Many thanks for an answer.

 

Peter