Copy/paste email node loses credentials

I find that if I copy/paste an email node (even into the same flow) then the user and pwd fields are emptied. Is that by design? I can't see an open Issue about it.

node red 1.0.4, nodejs 12.16.1

Credentials never get copied with nodes. That applies to copy/paste and export. Always been that way.

OK, thanks, I think the reason I hadn't noticed is that the vast majority of the nodes I use that need credentials are MQTT nodes, and since the credentials are in the config node then one can happily copy/paste MQTT In/Out nodes and the credentials appear to follow (even though actually they are not).