October 06, 2013, 11:04:54 pm
Multiple undo's/redo's are not supported in Lumion. There are some actions that allow for a single undo. To recover from some changes in settings you just need to re-set the slider values as to how you want them.
There is a certain level of reliance on the user knowing what they need to do without spending their time un-doing/re-doing things. Users should also note that sometimes values do not need to be so specific that any change in a value needs to be tracked in Lumion in case the user needs to undo it, for example, many of the settings in the Photo and Video Effects Library.
Ability to provide more of and levels of undo/redo, has been requested by users and is in the Wishlists.