With recent migrations to a new permissions structure that brings greater collections management flexibility to your organization, vault items that are not assigned to a specific collection are now no longer displayed in your Password Manager All vaults view.

You haven’t lost access to these items! You can assign these items to collections so that they will be displayed in the All vaults view.

For more information, refer to https://bitwarden.com/help/unassigned-vault-items-moved-to-admin-console/