Weird Things that Happen to me with Max

[boehmz]

2 Main things for now:
1. Sometimes when I open a file, I cannot undo anything. I have the undo limits set to around 50, but it won't let me use ctrl + z or the button. It is also empty when I right click on it.

2. I always have trouble animating specific vertexes. When I have an object's motion already animated, I apply edit poly and form the vertexes how I want them. Sometimes the entire scene will only show the latest changes I made, even tho I have applied them at different times. Example: A box is moving across the screen. I want it to go from a simple box at frame 0 to one with a point on top at frame 100. When I set the key at frame 100, the point will already be there at frame 0. I redo everything and the second or third time it works. What exactly should I be doing to make this less painful?

Thanks for any help!