Attempt to edit a backup plan fails with the following error:
Failed to load the protection plan for editing. The protection plan cannot be loaded now. Try again later
Issue in the product.
This issue has been fixed in Acronis Cyber Cloud 9.0 Update 2 Hotfix 1.
As a workaround for earlier versions, create a new protection plan with necessary parameters. You can continue backing up to an existing archive with a new backup plan to avoid creating duplicated backup files: