When sending a message to an individual user, there is a link to view the past conversation with this individual user. If a user clicks that, they are taken to the page showing the past history of the conversation, but the content of any current message is lost. Users may click this link deliberately (assuming their current message would be maintained) or mistakenly (thinking it will send the current message).

• If there is any text added to the message pop-up dialogue, carry the text from the message dialogue to the new message box on the conversation history page.
• Only show the link if there has been past conversation between the current user and the person they are sending a message to.
• The name of the link should also be reconsidered. Perhaps "View conversation history" would be more relevant.

Replication steps:

1. Log in as teacher/admin
2. Navigate to a course
3. Click on Participants or Users
4. Click on the name of an individual student
5. On the profile page, click the Message button
6. On the pop-up message dialogue that appears, add some message text (don't click Send message).
7. Click the "View conversation" link

Expected result:

• User is warned message will be lost or message will be preserved somehow.

Actual result:

• User is taken to message history page and current message is lost.