Hi there, @marlinsswimoffice. Welcome to the Community.
When you mentioned that the invoice number is no longer an option, do you mean that the invoice number field no longer appears when creating batch transactions? Any additional details you can share will help me give you the most accurate guidance.
In batch transactions, QuickBooks Online automatically groups multiple line items into a single invoice, provided they are assigned to the same customer within the same batch entry. Because of this automation, the system won't allow you to assign an invoice number to each line manually. Instead, QBO generates one invoice number for the entire grouped transaction.

If you need each line item to have its own unique invoice number, you would need to enter the customer separately on each line with only one item per entry. However, this will result in multiple invoices instead of a single combined one. To keep them organized, you can use classes to track and group them even though they're on separate invoices.

If you have follow-up questions, please don't hesitate to click the Reply button.