WAN - WanChain ERC20 tokens appear as negative in the portfolio.

As WAN tokens were credited to the ETH wallets without the transaction appearing in the token transfers and later everyone had to send the WAN's out. Now when i link a ETH wallet which had the ERC20 WAN before, it appears as a Negative amount, distorting the total portfolio value.

Could you find a way to fix this issue. I am sure, everyone who had ERC20 WAN's will have the same issue.