whenever you delete an account, property or view it goes into the google analytics trash can. It is like, you delete an item from your computer and it goes into the recycle bin.
Once you delete any account, property or view it will remain in the Trash Can for 35 days. Within 35 days if you want to see your history reports you can restore it from Trash Can.
How to Restore Data from Google Analytics Trash Can?
Step#1: Login to Google Analytics account
Step#2: Choose your Account from the Account dropdown menu
Step#3: Click on Trash Can
Step#4: Check all the views & properties you want to restore
Step#5: Click Restore button.
See the original question: Backup google analytics views