Is there a way to sync or mass import attendees from a live site to a staging site before we make the staging site live? I have EE3. I see where I can download the attendee list, but not where I can upload it
There isn’t a built in user interface for this, but if you have access to a tool like PHPmyadmin you can copy all of the database tables with _events_ in their table name. So you’d copy all _events_ tables from the live site’s database into the staging site’s database. This will also copy the events and other registration information too.