QB Issue Resolution:

The Desktop QB programs of Enterprise and (Premier) have “Accountant’s Editions” with the tool for “Period Copy.” That allows you to give you file to someone with this Edition and ask them to make this Period Copy = a subset file holding only the records for that date range.

Resolution for Issue 'Can you back up just one year at a time?' available: Yes (Solved).
Source: Intuit Community forum.

Can you back up just one year at a time?: 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 date range
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Error Recovery for date range [Canada]
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