QB Issue Resolution:

no, and some accounts can not be deleted, they are intuit defaults

Resolution for Issue 'In QB Online, can I delete the entire default chart of accounts and import my own without having to do it account by account?' available: Yes (Solved).
Source: Intuit Community forum.

In QB Online, can I delete the entire default chart of accounts and import my own without having to do it account by account?: 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 Chart of Accounts
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Error Recovery for Chart of Accounts [Canada]
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