March 31, 2012, 11:14:06 pm
Have you looked at the (somewhat old but still useful) video tutorials
Also the Tips and Tricks Topic
here at the forum is also important to read.
Imported models are a master and always get updated when you make changes in the Materials Editor.
Scenes that you build are in a Lumion Scene file and need to be saved as you want (Home --> Save). If you do changes and want to save them then use the Save icon. If you want to iterate the versions do a SaveAs by simply changing the Scene Project name (eg myLumionSceneName_1a, myLumionSceneName_1b etc) when you go to save. (there's an issue with saving in current version to watch out for,but hopefully will be fixed very soon)
If you are recording camera motion for a scene animation, that is updated whenever you click the camera or circular icon in Camera record window, but will not be saved for the scene unless you do a save.