I appreciate you for joining the thread, jv501. Allow me to assist you today by providing some clarifications about our available third-party applications.
 

Although the applications available on our marketplace are supported and can be integrated with QuickBooks, please know that they're still different programs and we don't have specific knowledge about their respective features and abilities.
 

Yes, you can import your data through Excel but it depends on your chosen third-party application. You may want to take a look at how this app works on this page: Apps help QuickBooks run better. Enter "Transaction Pro" in the Search by name, keyword, job, or category field and select Key benefits.
 

Alternatively, you can also get in touch with their Support Team by giving them a call or sending an email. Their contact information is also provided on the page.

Furthermore, I'd be glad to share this article as your future reference in case you need some help fixing your broken files, and moving your books from and to QuickBooks: QuickBooks Data Services FAQ.

I'll be here if you have additional questions about third-party integrations with QuickBooks and for all of your QuickBooks needs. Just hit the Reply button and I'll get back to you. It's my priority to ensure all your queries are addressed. Keep safe and have a good one.