QB Issue Resolution:

Those are custom fields. You can add them or remove them. in the sample file, bring up the item list, edit an item, and click on Custom fields, then click on Define fields to see them.

Resolution for Issue 'Trying to match QB2004 Win invoice layout. But, Mac 2010 does not have enough columns to do the job. Is there a way to add additional columns to invoice layout?' available: Yes (Solved).
Source: Intuit Community forum.

Trying to match QB2004 Win invoice layout. But, Mac 2010 does not have enough columns to do the job. Is there a way to add additional columns to invoice layout?: 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 Invoice
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