Question: Unable to delete a conversation history so that it does not resume upon sending to the same recipient
I've googled lots on this to no avail so here I am. I find it annoying that it's not a simple matter to end a conversation in the Messages app, at least isn't for me on Sierra or High Sierra. I'd like to end a particular message because the message is a focused topic, and I want it to end so that I can start a fresh topic on another message to the same recipient(s), much like email functions. If I select a message on the left pane which then displays the message thread history, and choose Delete Conversation from the File menu, the message disappears as it should. But if I then attempt to write a new message to the same recipient(s), the entire message thread history again pops up to add to. I've tried both checking and unchecking 'Save history when conversations are closed', and that has no effect. I would like to permanently delete the message, or at least not have it repopulate on a new message.
Thanks in advance!
MacBook Pro, Mac OS X (10.7.4)