QB Issue Resolution:

QB SE is not convertible to qbo. You would have to transfer over beginning balances and start new.

Resolution for Issue 'Need Help to move data from QB Self-Employed to Quickbooks Plus' available: Yes (Solved).
Source: Intuit Community forum.

Need Help to move data from QB Self-Employed to Quickbooks Plus: 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 beginning balances
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Error Recovery for beginning balances [Canada]
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