When you delete a message also delete the replies associated.
Currently when you delete the main message the associated replies will still exist. As the original poster you should be able to delete your post which should delete the entire string.
Bhanu prasad commented
I agree with this idea..
I have a problem with this. Suppose I was instructed to complete a task, which I do. Now my manager realized that completing the task was detrimental and he deletes that message. Now he can say, "I did not tell you to do that. Your mistake." I go back to prove that he sent it, and now its gone. This would not happen in outlook and it should not happen in Teams.
I agree. it can leave the conversation page full of deleted posts. That is problematic for keeping clean conversation page and for litigation...
Shane Fryer commented
This is a very strange feature, leaving replies when the original post is deleted. I also think this idea of voting for changes should be consider enhancements and bugs. To me this is a bug and should be fixed irrespective of how many votes it gets, which is not many right now.
Yes! I agree. It would be nice to delete the whole block of messages.