Video Tutorials: Changes with Domain Mapping

I can find nothing on this in the instructions for this plugin.

I'm now getting a message "Displaying support videos in the admin area of sites is incompatible with your domain mapping settings. Administration mapping must be set to "original domain" to display videos in the admin area.".

Under administration mapping, it's currently set to "domain entered by the user". If I change it to "original domain" (as suggested), will that affect the ability of the user to map their domain by themselves? Does it affect already mapped domains?

Thanks!