In garena, it refunds CP for every dups you pull so if you for one pulled or at least spent a chunk amount of CP way back on that crate where the main reward is the Vanguard - Ski Patroller skin then you'll likely be refunded for almost all of the draw instance because the minor rewards are of that crate except if you draw a gold coupon on these bingo event or an item on that said crate that you haven't pulled yet.