Microsoft Threat Modeling Tool - Manually added threats Interaction name changed to "Deleted"

When I manually add threats by right-clicking on the interaction name, the threat is added, and I am able to enter information. After saving, the Interaction name changes to "Deleted" so when you filter on the interaction name, manually added threat are not included. If an HTML report is generated, the threats do appear under the correct interaction, but within the tool itself this would be helpful if it would maintain the proper Interaction name. I am not able to manually change the interaction name on the threat itself once it is added.

I have tried emailing tmtextsupport@microsoft.com as recommending on multiple posts concerning threat modeling tool questions, but the email is rejected with the message "The group AzSecCopilotCore only accepts messages from people in its organization or on its allowed senders list, and your email address isn't on the list."

Is there a way to resolve this?

Thank you!