I agree, Quickbooks Online is literally useless when it comes to generating proper progressive invoices. We've been waiting 4 years and they still have done nothing to match BASIC functionality in their desktop products. All development emphasis is on Quickbook payments so that Intuit can make CC revenue. 

We STILL require an old copy of Quickbooks Desktop to generate our invoices because Quickbooks Online is incapable of displaying the columns: Prior Amount, Prior Percentage, Current Percentage, and Total Percentage. Until those columns get added, we'll continue do invoicing with QB Desktop Premier Professional Services Edition.