I want to understand more about QBO Backups that is a new feature in QBOA/Advanced.

Who can perform the company's backup or who has the rights - ordinary user, or higher level user or Admin..?

Also I have seen in the article on Backups that there is data that can and can't be backed up. During a restore of older backup I would like to know (a) what data gets restored, (b) what data gets deleted and or (c) what data is left untouched? 

Does restore overwrite the entire database such that data such as recurring transactions would have to be recreated again..?

What happens for instance if a backup is done (let's call it backup Z) and then a new customer is created and then a recurring transaction that involves that customer is created e.g. recurring invoice. Then one restores the backup Z to the live database. In such a case what would be the implication on the recurring transaction which had the newly created customer e.g. the recurring invoice?

Can one create a test database for the company using one of the backups? (In On-premise non ERP systems you can have live and test databases usually portable and in ERP systems there is live, production and test databases for all to play around with).

I want to understand the integrity of backups and also so many other things on this feature. What resources are available. 

Backups and Restore in on-premise systems work differently hence I am interested in understanding how they work in QBO and cloud systems.