QB Issue Resolution:
This is a recently added feature and is rolling out now. To see if it is available for you:
Company Gear>Tools>Import Data>Invoices (if you are referring to your customer invoices); >Bills (if you are referring to your vendor invoices)
Follow instructions on screen ie. 1. Preview what is required; 2. Upload your csv file.
In order to import the data, your csv file must be mapped correctly. Before the data is imported you should have a screen that will allow you to check the fields before importing.
Resolution for Issue 'How can I import invoices into QuickBooks online?' available: Yes (Solved).
Source: Intuit Community forum.
How can I import invoices into QuickBooks online?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.Support for CSV file
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Error Recovery for CSV file [Canada]
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