Does Multi-DB work with Mapped Domains?

Hi,

I'm looking to install Multi-DB, but am not sure if it is going to cause a problem.

I was reading the instructions posted by
http://bavatuesdays.com/wpmu-multi-db-tutorial/ and he mentioned that it broke his mapped domains.

Should I expect this to happen?

If so, how do I get a list of all my mapped domains and fix them?

Thanks,
...Mike