User created and approved expenses on a project with the Recurring contract type, but these do not show up for billing on the Create Batch Invoice screen.
This happens because the Recurring contract type in BQE CORE assumes that your expenses are part of the recurring bill amount. If you want to include the expenses separately or on top of the contract amount for billing, you need to change the contract type to Recurring + Expense. Check CORE Help Center for details on contract types.