Yes, but according to my understanding you do have the coins in your wallet at all time.
From Minexsystems:

Unlike traditional deposits, when you transfer funds to third parties, in our Parking system all your coins are stored on your wallet and you can re-park them or move from the wallet whenever you want. How it works in details, you can see in our White Paper https://minexcoin.com/html/download/wpeng.pdf