I've uploaded Expenses, but they populated as Deposits. Is there a conversion procedure to change them to Expenses?

Hi yakker, 

Good job on uploading your transactions in QuickBooks. I'll be happy to share more info on how to fix this issue. 

Firstly, it's important to note that . QuickBooks Online uses 2 CSV template formats:

•     3-Column
•     4 Column

If you're using the 3-Column format, make sure the expense amount is negative. Refer to the screenshot below.

Then, if you're using the 4-Column format, the payment/expense amount is under the Credit column. I've also attached a screenshot as your reference.

For more information, please check out this article:How to import bank transactions using Excel CSV files. Since you've already imported the transactions, you can exclude the incorrect entries then re-import them again by following this article here. 

Let me know if you have questions. I'm here to help.