Schools report the list of deposited students to ADEA AADSAS on April 1st. On April 5th, ADEA notifies schools of each deposited student at that school who is also holding a deposit at other schools. Schools are then allowed to remove candidates from the class with a 15-day notice of their intention to do so. If you withdraw other acceptances before the 15 days you are fine, but if you continue to hold multiple seats you can and will be dropped.