"Dennis had been sleeping when Margaret came into the room."
I decided it would be tighter if I wrote instead:
"Dennis was sleeping when Margaret came into the room."
Then, I had the brilliant idea of doing a systematic change, telling my computer to find all the had's so that I could quickly run through them all and change the ones I wanted to change.
It was a fast way to do it, but now I'm worried that my prose won't flow, that I'll have inconsistencies because I didn't read through the entire draft again during this last correction. So, possibly, this edit created more work for me rather than less.
Do you ever rely on these types of automatic changes? Does it work for you?