Man, the new yahoo format is alot clumsier than it used to be. I chose my keepers, they were supposed to be official last night, but I'll be damned if I can find any evidence of who kept whom on there.
Go to "My Team", click the tab at the far right of the page that says "Keepers". There should be a check mark beside the two players you chose to keep. I don't think you can see who other teams keepers are.