Well, I'm back and pleased to say all's not lost. I followed through with the steps I mentioned in yesterday's post and when I was ready to tackle the edits ... again, I put on my earphones, popped in my CD of Mr. Holland's Opus and got it done. ;)
My word count is down by around 300 words, so I'm obviously missing some text, but that's easily fixed. All I need to do is compare my good printed chapters with the earlier electronic version to see what I need to update.
It certainly didn't take as long as I thought it would. So glad I didn't lose any sleep over this either.