In an HA environment, the XML document can be stored in the Repository and will be replicated to the other node. This is what I've done with all my XML documents and dynamic prompts (e.g. message of the day). There is a bug relating to the uploading of XML (non-TXT) files to the Repository; the workaround is to write the document to disk first, before using the Upload Document step to store the document in the Repository (a valid CRS user needs to be specified in this Step - use the Get User step to retrieve the User variable from a string containing the user). You would have to reset the value manually, andyou'd only have a 'count value'.
The Call Contact Variables get written to the Call Contact Detail Records with IPCCX, not the CallManager CDR records. The are a couple of new Historical Reports which can be used to extract information regarding these variables, but I haven't used them myself. A custom report may be required.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.