License warning for old license.

I have a new license for SBS 2008 and have installed the .slf file and it shows OK in the Admin License page of the manager. Howerver I am still getting warning emails and the Manager Home page is still indicating I need to take license action for the old license. It appears the new license has not been properly installed. Advise sought. Should I delete the old license (even though I prefer to keep it for the record)?