iTunes

If I use Match, will all my files that match already in "Match" maintain the labelings I have given them in my iTunes browser or will I see only the default information that the file has corporately in the cloud.

I don't want "Match" to change the labelings in my main based iTunes on my iMac, and I would like to see all the same information on the matching files when they are played on other devices. I would also hope to not see doubles of every file that match "Match" suddenly appear in my iTunes browser.

How does these issues work out when using Match?

Thanks for info

James