Wasser, in a declaration to the judge, asked for this because Britney fears that if details of the specific timeshare schedule and transportation matters become public knowledge, it could put her boys Sean Preston and Jayden James at danger.
"Criminals ... might target the minor children for financial gain," TMZ quoted Wasser, as stating in the declaration.
Wasser also states that if made public, the media would have "a greater ability to ascertain the physical whereabouts of the minor children."
"Such information greatly increases the chances that the actions of the media could threaten the safety of the minor children by, for example, causing a traffic accident or by exposing the minor children to criminals who might target the minor children for financial gain," she stated.
The judge granted Wasser's motion to seal the custody documents temporarily, pending a full hearing on Aug. 14. He also agreed to keep the child support provisions under wraps.