If you are existing users in Celoxis and have been invoicing time entries in Celoxis, you need to first agree on a date prior to making the switch. This is essential because post connection you cannot invoice time entries in Celoxis. Invoicing has to be done from QuickBooks Online.
All existing Invoiced time entries will not be synced with QuickBooks Online. These entries will continue to retain the v9.1 behavior till the time they are explicitly “UnInvoiced” by a privileged user
The time entries will not have invoice and UnInvoice option.
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Only approved and billable time entries can be synced.