QB Issue Resolution:

Rarely can you upgrade a 13-year-old file in one step.  You need to go from 2006 to 2009 to 2012, etc. (rebuilding your file after each upgrade).  If you don’t have access to these older versions of QB ask Intuit to do it for you.  I have been told by Intuit employees that they will do it for free, esp. if you purchased 2019 from them.

Resolution for Issue 'Does anyone have ideas? I am trying to open a portable file from my QB Pro 2006 in my new QB Pro 2019 and followed directions.' available: Yes (Solved).
Source: Intuit Community forum.

Does anyone have ideas? I am trying to open a portable file from my QB Pro 2006 in my new QB Pro 2019 and followed directions.: 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.

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