flags on re-edited message

[Luis Mochan]

Hello,
After I re-edit a message I have sent or a message I have received,
usually to set or modify the X-Labels header, I loose the flags of the
message. For example, if I read a message, reply to it and later edit
it to set its X-Labels, the original message is marked for deletion
and the new message is marked... New. I would like the new message in
this example to be marked as read and replied-to. Is there a way to
keep the old flags in the newwly edited message?
Thanks and best regards,
Luis