Hi there, Ashley.
QuickBooks Self-Employed is built for simplicity and efficiency for independent professionals. Currently, it does not allow you to delete or remove old customers or services from the invoice dropdown. Once names are entered, they remain in the system permanently. Advanced features like editing or removing entries from dropdown menus, or using backend tools to change these lists, are not available at this time.
If you have any additional questions or concerns related to QuickBooks, feel free to reply to this thread.