It's unfortunate, but i'll advice to desist from using both wallets at the same time as you are causing interference with the blockchain.
This is what is happening, You are mixing data from blockchain1 and blockchain2 in the same data direcotry, some of them happen to broadcast and make it through some 1 or 2 peers and hence making it through to the blockchain as a "non standard transaction" because it passes certain validations/checks. Some of them are rejected right away without making it through a single node.
This is the reality,
When you send a coin using a properly synched blockchain with wallet v1.2.1, then you have no cause to worry even if the recipient is on the old chain.
When you sync your data with v1.2.1 and later open wallet v1.2.0.0, since you are the only peer using that wallet, you are the only person to confirm your own transactions and blocks.
PLEASE, copy your wallet file and delete your entire data directory, download a bootstrap and sync with wallet v1.2.1 ONLY, DON't ever open old wallet.
If you don't follow as adviced, you will continue to loose coins because your coins will not even make it into Neither of chain1 or Chain2.
I never knew of this coin existed until i saw it on Yiimp on 05/19. I came to this forum and downloaded v1.2.1 and mined on Yiimp and had the coins sent to my wallet. Coins never arrived.
So, I came on this forum and was told to delete everything in my roaming folder, download the old wallet off the old ANN (v 1.2.0)and see if they downloaded, which they did.
All the mined coins from Yiimp Pool are on the old blockchain and all the newer ones are on the new block chain.
So I sent the coins from the old blockchain to C-Cex and they never arrived.
So I am out the money I spent on miningrigs.com to mine the coin and I am out the coins.
..and somehow that's my fault.