I created MultiBit wallet in 04.2014, exported .key file for backup and kept using the wallet.

In 11.2014 I made a payment and MultiBit generated new address and sent rest of my bitcoin there. I wasn't aware of that and kept using my wallet thinking that my bitcoin is safe.

I upgraded to windows 10 in last august and with my .key file I was able to restore only access to my first address. Which was empty.

So that means there is no way to access the new address? Thanks!