Hi @itsm,

I'll answer this data conversion query for you.

QuickBooks Online (QBO) and QuickBooks Desktop (QBDT) have a few features that are exclusive to one another. Let's take the multi-currency feature in QBO. If your company has this feature enabled and converts it to QBDT, the process may fail or lead to an empty company file. 

You can open this article for information: Limitations when you convert from QuickBooks Online to QuickBooks Desktop. It lists data types from QBO, along with a brief description of how it converts into a QBDT company file. 

It's best to contact our Technical Support team for assistance. They can assist with any possible issues you can bump into during, and after the process. 

See this article for the steps: Contact QuickBooks Desktop support. Please take note of their operating hours, so you know when they're available. 

Post a reply if you have other questions about conversion in QBO. I'll be sure to get back to you.