I also thought that when you turned 18 it was supposed close...Are you certain your juvenile record is "sealed?" Used to be in Indiana that all juvenile records became closed upon one's turning 18, essentially making youthful occurrences a part of history that is forgotten and forgiven. A number of years ago (10 to 15?) law changed allowing authorities to see and consider what is in one's juvenile record. I'm doubtful there is any such thing now as a sealed juvenile record unless a Court orders a particular occurence to be "sealed."
Indiana also waives juveniles into adult court on certain charges. Just because one is a juvenile, doesn't mean the law treats them as a juvenile in certain cases. A juvenile occurence may be an adult charge in the eyes of the law.
For your consideration...
haha. They are not shredded, omitted, destroyed, or "erased" ever. Any LE branch can view your arrest record, expunged or not. A lot of people think this, and have the misfortune of finding out othewise when they are arrested again.