QB Issue Resolution:

If 2013 & 2015 are both on the same PC, open 2015 go to File > Open or Restore > Open and navigate to where your 2013 .qbw file has been saved. select it and open.

Resolution for Issue 'How do I convert Quicken Premier 2013 to QuickBooks Pro 2015?' available: Yes (Solved).
Source: Intuit Community forum.

How do I convert Quicken Premier 2013 to QuickBooks Pro 2015?: 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 2013
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Error Recovery for 2013 [Canada]
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