You can't delete, replace, or import the default backup profile. This is a necessary restriction as we must always have a profile with ID = 1. It acts as a fallback if all else fails.
What you can do is transfer the settings manually. I will give you two options, one is just point and click (but tedious), the other one involves copying database data over.
Go to the Profiles management page and select (check the box next to) the default backup profile. From the toolbar click Actions, Reset. This restores the default backup profile to the factor defaults. Now you can redo the configuration you have in another backup profile. This is tedious but is the simplest of the two methods.
Another option is to go the database route. All backup profiles are stored in the #__akeebabackup_profiles table (where #__ is the common database table name prefix of your site). You can copy the contents of the configuration and filters columns from the row with your known good backup profile into the respective columns of the default backup profile (where id = 1). You can do that with phpMyAdmin or Adminer; one of these will be installed on your server and available through the hosting control panel.
Nicholas K. Dionysopoulos
Lead Developer and Director
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