DMA assists you with the first step in migrating Cisco Unified Communications Manager data from versions 4.1(x) and 4.2(x) to Cisco Unified Communications Manager 6.0(1) by backing up this data in a format that Cisco Unified Communications Manager 6.0(1) can read.
You always need to be in the latest release of whatever train you're on. In the early days DMA lacked validation for this and you could get a DMA file from a 4.1(2) or a 4.2(1) CCM. Later this was enforced so you couldn't run DMA on any of those versions.
Usually the closest the versions are related to features is the upgrade path you can use.
ie 6.1(5)/7.1(5) are closer to 8.5(1) featurewise than previous 6.X or 7.X releases, so it's easier to upgrade.
But notice that they are the latest releases for their trains.
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.