I'll be sharing details on how transferring data works from QuickBooks Desktop to QuickBooks Online. Let me also ensure you can move all of your lists from one program to another.
When you migrate from QuickBooks Desktop to QuickBooks Online, you'll notice differences in how your books appear. Some information isn't transmitted while moving your data due to feature differences. This is why some information from certain lists did not migrate. You can open this article for further details: Learn how features and data move from QuickBooks Desktop to QuickBooks Online.
I recommend checking what data did not move from QBDT to Online, as you will need to manually enter them into QBO. In this manner, you'll be able to get the information you need so that they appear on the program. You can open this article to see guidelines on how you can effectively record your entries using QBO: Help guide for QuickBooks Online.