I am looking for a way to keep using the Gmail "Conversation" view, and be able to hit the Trash icon (not archive) to throw away the whole conversation, but still keep any "Sent" messages under the "Sent" label. I want to get rid of the rest of the conversation, but keep any messages I've authored or forwarded.
My research so far doesn't show this is possible. I understand there is only one copy of each message, and trashing the conversation trashes all the messages in the conversation view (including my sent contributions).
I'm looking for some combination of filter rules, or a setting option, which basically says "Don't trash Sent messages when trashing a conversation."
Perhaps a filter that says "If a message goes in to Trash, and has the 'Sent' tag, move it out of trash and Archive it instead."
Any ideas appreciated.