Currently Being ModeratedJun 19, 2013 6:30 AM (in response to auntofsix)
Thanks for the question. You are definitely able to change the calendar an event belongs to after creation:
If you created an event, you can change any of its settings.
Calendar it belongs to
Double-click the event, click Edit, and choose a calendar from the Calendar menu.
You can also simply right click on the event and choose "Calendar > [calendar name]"