I posted this in the feature requests board but I will also post it here:
I figured out a couple workarounds for the chat log.
Clearing: The GM can copy the campaign and if he deselects the chat log it effectively clears the log.
Archiving: Go to the chat log, right click, click save as, save the type as a Webpage, Complete. Then you can open that up and copy it normally.
- Gauss