Moving MobileMe calendar to iCloud 

When I switched from MobileMe to iCloud, my calendar did not make the move.

I stopped synching the mobile me calendar on the iPhone.
Settings->Mail, Contacts, Calendars->MobileMe->Move Calendars to Off
When prompted, keep calendar on iPhone.

Go to iCloud in the settings and Calendars
Settings->Mail, Contacts, Calendars->iCloud->Move Calendars to Off
When prompted, keep calendar on iPhone.

Wait a few minutes and then move Calendars in iCloud back to On.

When prompted, agree to Merge the calendars.

In a few minutes, the old mobile me calendar appeared in iCloud.