QB Issue Resolution:

Yes, it needs to be updated; that is a 2-year Jump. There is no going Backwards, once it is updated, as well.

Resolution for Issue 'how can i import a qbb from enterprise 17 using a trial enterprise 19?' available: Yes (Solved).
Source: Intuit Community forum.

how can i import a qbb from enterprise 17 using a trial enterprise 19?: 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 qbb
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Error Recovery for qbb [Canada]
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