Final answer:
Deleting a worksheet from a dashboard and saving the changes makes the deletion permanent. Using Revert to Saved restores the last saved state, which won't include the deleted worksheet.
Step-by-step explanation:
If you delete a worksheet from your dashboard and then save it, the worksheet will be permanently deleted from the dashboard. When you use the Revert to Saved action, the dashboard will revert back to its last saved state, which means the deleted worksheet will not reappear. The Revert to Saved action only restores the dashboard to the state it was in when it was last saved, so any changes made after that point will be lost.
If you delete a worksheet from your dashboard and then save the dashboard, the worksheet will no longer be part of that dashboard file. When you use the Revert to Saved action, the dashboard will revert to the state it was in the last time you saved it. Since you saved the dashboard after deleting the worksheet, the Revert to Saved action will not bring back the deleted worksheet because your last saved state confirmed its removal.