You can try this, sometimes it works

in the chart of account run a report for inventory asset, each line that has a START entry, edit the entry and set the qty to zero and the cost to zero, save

Sometimes that works, if it does not work for you, then you […]

Resolution for 'affect PL issue: 'How can I remove inventory and not affect P&L?' available: Yes.

The affect PL 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 affect PL issue yourself by looking for a resolution described in the article. If it is a complex affect PL issue or you are unable to solve the issue, you may contact us by clicking here or by using other affect PL support options.

For more information about resolving issues related to affect PL in Quickbooks/QBO or to get support for the issue 'How can I remove inventory and not affect P&L?', click the link below: