Hi there, @HenningvdW.

I'd be more than happy to assist you in moving a sub-account in your QuickBooks, but I have some questions about your concern first​.

So that I can provide you with the best information, may I know if you're using QuickBooks Online or QuickBooks Desktop? Also, are you receiving a specific error or message when moving the sub-account? To add the details of your issue, you can add a comment below.

I look forward to your reply and further assisting you.