I’m a relative newbie and I too have wondered about ‘unsplitting.’ I understand ritmer’s suggestion above but shouldn’t the app programmers have offered a simpler, more elegant way to do this? One for the suggestion box, I guess.

Unsplitting is only a simple task if done immediately after the split, and at that point Undo does the job just fine. After you've done a few more edits it's quite likely that unsplitting could be disastrous, clobbering other edits you've done in the meantime.

My advice is usually to ignore it completely. In *most* cases, you can ignore the fact that the event has been split and you'll never notice the difference.

I have never found an easy 'split undo' method. All of the above suggestions work. You may just want to GROUP the pieces if you're far along in the project and try to ignore the split. It's far better than the days with a razor blade and splicing tape!

Simple.
Delete one segment of the split event and drag the other out to its original length. There are snaps at each end.

If you have ripple turned off, you won't have any train wrecks of the kind Kelly just described.

When you split an event, it creates two (or more) complete copies of the event, so you can throw away one without losing anything.