I have a prisoner with wake-up addiction and I am fairly certain they were at about 20% of their wake-up need (so I'd need to administer it soon). A mech ship dropped so I put the raider into casket for several days and when I took her out, she was a 41% withdrawal. Not sure if this is intentional but if it is, it can be very exploitable to get rid of addictions. No mods, vanilla latest version.
I did a test colony.
Gave 2 pawn's Wakeup addiction and let it withdraw to 50%.
I send one of these into a cyro casket.
Then i wait until the other got a withdraw of 60%.
After that i open the casket.
And the pawn from the casket still got 50% withdraw.
So i can't confirm it.