How do I make big changes in my ads?

I have an ad up that I'd like to change a lot. It's currently for a camera and lens, and I think it would work better to list them seperatly. Since the old ads can't be deleted anymore, is it OK to totally redo the existing ad incl the title, or should I run separate ads and leave that one ad alone? Thanks, Steve

Post to say that you are going to re-list everything separately, then lock the thread.
Post a new thread or threads the way you want it.
If you wanted to be fancy, you could start the new threads, add the links to the new threads in the post about the re-listing in the old thread, and then lock the old thread.
You can always cut and paste text from thread to thread, but links are a little more tricky.

Exactly what I needed, thanks Matt