[aiharkness]

Points of fact:

You cannot send and receive calendar appointments without the CICAL service book.

You will have multiple calendars if you have multiple email addresses, and a CICAL service book for each.

You, the user, identify the default calendar and messaging service in the device options.
Calendar invites are received using the default calendar, and sent using the default calendar and messaging service.

So, if you haven't done so, resend service books. Then change your default CICAL and default CMIME to the address you want to be the default. I believe after you send the service books you will see other options besides gmail, provided gmail is not your only email address in BIS.
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