Is it possible to revert committed deletion from Core Data Cloudkit in Swift?

A user has accidentally deleted a root record that removes all data from the user. The data is stored in Cloudkit CoreData with Transaction History enabled.

I have noticed in the CoreData database that there is a ACHANGE record. And every NSManagedObject save or delete commit will create 3 new ACHANGE records to the CoreData database as follows:

• ZENTITY 1, 9, 18 which refers to the Root, Child and Grandchild Entities).
• ZCHANGETYPE seems to indicate - 0:Create; 1:Update; 2:Delete
• In the respective ZENTITY (e.g. 18), the corresponding ZENTITYPK (e.g. 15) is PERMANENTLY DELETED from the database and a new record of the ZENTITY 18 will take the next value ZENTITYPK 16 (See image).

=== QUESTIONS ===

1. Can someone explain the purpose of ACHANGE in CoreData database?

2. Is there a way to revert the Cloudkit CoreData to a specific Transaction History Token (or to the commit before a specific ACHANGE)?

3. Are the contents permanently deleted from the database after:

context.performAndWait {
    //... fetch object
    context.delete(object)
    do {
        try contex.save()
    } catch {
        print(error)
    }
}

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