When saving your projects, make sure that you label them clearly so you can recall their specificities. You can also use folders to organize different projects and versions of songs. Here’s an example of how I often label my tracking projects:
Since many styles of electronic music don’t include lyrics, it lends itself well to the endless development of an idea. Andrew Bayer’s “Counting the Points” is a beautiful example of this sort of repeated development of a theme or idea.