Glad to have you back here in the Community, @bero.

I hear you and realize the importance of having the ability to mark the bills as paid when imported in QuickBooks Online. 

However, you may follow the the suggestion given by Fiat Lux - ASIA above, or utilize a third-party converter that supports this feature and integrates with QuickBooks.

We aim to give you the best customer experience, and we are committed to developing simple, intuitive software that includes new features that will help you run your business easier.

To be updated with our recent enhancements you can check out the site that I provided above.

You can always visit me here if you have any other questions or concerns with QuickBooks. I'd be happy to help. Have a good one!