I just did a test by sending coins using invalid blockchain after 1611. It was deducted from my account, then I moved to current valid blockchain with same wallet & guess what those coins were back in my wallet. So any coins you have send or received or mined after block 1611 does not show up in new blockchain, That means Coins are still with Mine.it, you just need to give them some time to sort it out.

This is not something dev or pool op control. This is how Bitcoin protocol works & can happen to any coin.