Agree with stanski.
Once I get into a lengthy reply, just for caution's sake, I cut and paste what I wrote into a dummy Notepad or Workpad buffer. Even though I have a cable modem, sometimes it goes --- blip! and my connection goes SOuth. I've lost too many in the past.
I don't know whose fault it is; and it doesn't really make any difference. We all know better. Why take chances to get yourself stressed out, especially when you try to recreate the exact flavor of what you had written and you can't recall every detail of evey phrase.
Been there, done that. HATE that feeling of loss. not gonna happen again, ever!
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"...for advice is a dangerous gift, even from the wise to the wise...."
J. R. R. Tolkien