It's nice to have you here in the Community, @FTP1. I'll share some information about your concern.
If you use the QuickBooks Online (QBO) Advanced version or QuickBooks Online Accountant , you can reclassify or move multiple transactions at once. For all other versions including QBO Plus, you'll have to change them one at a time.
In case you'd like to proceed to modify them one at a time, you can refer to this article for the instructions.
In the future, if you plan to upgrade to QuickBooks Online (QBO) Advanced, you can use this article that contains an instructional video about how to reclassify or move multiple transactions at once.
Additionally, I'll be leaving this article about how to manually add transactions to account registers in QuickBooks Online.
You can get back to me anytime if you have any additional QuickBooks concern. I'd be more than willing to provide extra assistant. Have a nice day!
