I seem to run into this on a regular basis (not daily, just regularly) where I want to copy my actions from a schedule to an action group or action group to a trigger or whatever and have to painstakingly recreate all my actions in the other method.
It would be nice if there was a button on all these methods to do something like 'Create Action Group From Actions' (a new action group from a bunch of actions in a schedule or trigger) or maybe 'Move Actions to Group'. Also the ability copy actions individually to another method.