I'm not totally sure what you're asking. I've never seen a change made to one desktop made automatically to the others. The problem I do run in to is that when I open a program for the first time it seems to appear in one of my desktops at random. When that happens I just three finger swipe up and drag the window to the desktop it belongs in. I never limit a program to one desktop, I just move its window there if it gets out of place.

These things really aren't too much of an issue for me though, mostly because I am loath to ever close a window or restart a program, which leads to everything happily sitting where I placed it.