When maintaining configurations in Quickbuild, it may happen that someone makes erroneous changes and wants to revert them to the previous state. The classic "undo" functionality would be perfect, although i think this is not the easiest to realize.

As an alternative, a nice solution to this problem was to allow manual backups of parts of the configuration tree, or just variables or single steps. This way, one can backup the appropriate items before making extensive changes and may switch back to the original version.