QB Issue Resolution:
Somehow your changes are not saving. Try file>utilities>verify data and rebuild data.
Resolution for Issue 'when i change and estimate into an invoice it will not let me change anything on the invoice. Is there a way to do so?' available: Yes (Solved).
Source: Intuit Community forum.
when i change and estimate into an invoice it will not let me change anything on the invoice. Is there a way to do so?: 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 Estimate
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Error Recovery for Estimate [Canada]
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