Hello, @candice11.

We want to ensure that you get the necessary information you'll need about those line items on the bills. Since the bill show that Melio changed the account, we suggest contacting the Melio Support team for further assistance. One of their representatives will assist you in investigating the cause of the issue. 

You can get in touch with them by clicking this link and scrolling down to the Contact section for their complete contact information.

These articles are to further guide you in monitoring your bills and other vendor transactions using QBO: 

• Expenses and Vendor topics for QuickBooks Online.
• How to add a preferred vendor and create a purchase order for that vendor.

Feel free to leave a comment below if you require further assistance with line items on bills. Keep safe.