[Evolution] Signature behavior

[aguador <waterbearer54 gmx com>]

I am running Evo 32.4 in Mageia with two IMAP accounts. The first
account listed is my business address which has a signature to be added
automatically to new e-mails only. The other is this personal account
where the default is no signature (although I do have a personal
signature I can manually add to e-mails).

I have noticed that if a open a message in the Outbox of "On this
computer" from the personal account to edit it, Evo automatically
changes the signature from "none" to my business account signature. I
have to change the signature back to "none" manually. It does not
matter if the message is an original or a response, Evo automatically
adds the business signature.

Is there some setting I've overlooked to correct this?