Saving the meeting chat dialogue can be important for resources, follow-ups, or action items.  You have two options.

If you are a meeting participant or host, you can save the chat to a file at the end of the meeting. Click the ellipses at the bottom of the chat window and click Save chat.  The saved file will be a text document.

If you do have the ability to record and want to record the meeting, record it to the cloud. This will produce the chat in the player window and produce a text file that can be downloaded.