If you are asking about pakcoin transactions to or from yobit then there is a slight chance with small transactions on main chain to get replayed on yobit chain. Let's say if you send 1 pak from yobit (which is on different chain) to your address on your wallet (which is on main chain) then there is sometimes a chance that you see the transaction in your wallet and explorer as well. That's replay transaction, the actual transaction happens on the yobit chain and as there is no replay protection on main chain, the transaction replays on main chain as well with same addresses and transaction hashes and you see the transaction in your wallet. That doesn't mean that you will always get such transactions, you won't get large transactions this way as yobit has a different chain.

Simply do not use yobit exchange for pakcoin.