When is the 'CMT' account used for creating invoices in QuickBooks?

I’ve created a QuickBooks invoice from RangerMSP and I noticed that a QuickBooks account with a 'CMT' prefix has been used. How can I prevent this and use other accounts?

The reason those accounts have been used is because they are connected to one or more QuickBooks items. In QuickBooks, go to the relevant items and update their default accounts to those you want. For the changes to take affect for future and past transactions you will need to confirm the following message:

"You changed an account for this item. All future transactions with this item will use this new account. Would you like existing transactions with this item to use this new account?"