Hello Ed.

@You : "...I just keep all my construction lines / curves and rebuild the model. To me it's a lot faster than trying to fix it.
I also duplicate and keep intermediate versions of my work within the same file. For example, I keep a version prior to adding fillets, making holes, etc. That way I can make modifications easily.

I totally agree with this point of view.

It's also my "style".

Thanks.