These Donors cannot be deleted permanently like you said, but yes, there is a way to hide them. First click Donors on the left navigation panel. Click the small Gear icon above the Action column. Un-check Include Inactive at the bottom. I have attached a photo for clarification.

Resolution for 'altogether issue: 'How do I remove a deleted name altogether from our Donors menu?' available: Yes.

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

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