Wrong balance: wallet address versus blockexplorer

[MyGCoin]

It seems my web-wallet shows the right amount of coins, but given the same coin address it shows a different amount of coins on this address at the block-explorer.

This seems to happen because there are further address created in the background of the webwallet upon sending/receiving coins
(result of change maybe?).

Is there a way to show the connected change-address holding those coins?

My solution so far is to send the entire amount of coins from address X to address X again, so the balance is shown correctly.