Changes will not be saved?

All properties (except member properties) that are changed by Lingo will not be saved into the w3d file. This is how Director 8.5 works.
Because the 3DPI communicates with your movie also with simple lingo, the changes done with the 3DPI will not be saved too.To keep changes one has to write scripts. Thats the fun and the strength of Director. The 3DPI only can help you writing the correct script lines:
With the help of the Trace Button, which is placed in the right upper corner of the window, you can get several scriptlines, which will appear in the message window.