If i asked something and then edited it before it has been answered, does the two messages exists individually or the old message just replaced (edited) by the edited message ?

On this portion of the platform, each message exists individually and any further message is not connected in any way. There is no replacement, link or editing. If you have a question, try to include as much information as possible and one of our volunteer Dr's will answer.

You asked a question for a answer that is correct and understandable. You then realized that a better phrasing and more informational question was needed. You will receive your edited answer since the original was never submitted.