Since the beta, I've posted 421 answers to Stack Overflow. Some of them are good - at least, I think so, they got votes, and were accepted. Some of these are just, in my estimation, OK - and they got accepted as well. Some are now just out of date.
I want to spend an afternoon editing my answer history, improving technical accuracy, explanations and general language whilst trimming out of date information. I want to focus on accepted answers, but improve my answer stock in general. I don't intend to change the substance of any answer unless it is incorrect, and will leave historical notes for information removed for being irrelevant.
My question is, what's the etiquette for this? I don't want to trigger any abuse filters, nor upset people who have accepted my previous answers. Should I stagger the process? Post new answers if the modern, "more correct", version is distinctly different? Abandon the idea?