Question...I installed the nano wallet on my mac, but when I imported my old wallet, it didn't reflect every transaction made, so the nanowallet has significantly less xem in it. I still have the old one, but I'm hesitant to do anything for fear of losing all of my xem. What steps do I take to start over the process of installing the nanowallet and importing the old wallet to show the correct amount of xem? Or is there a way to correct it without having to re-install? Thanks.
The balance of your XEM is not inside the wallet. It is all in the blockchain managed by the nodes. You need to make sure you have the private key and the account number. Once you have those keys, you should not be afraid to try the different wallets.
The wallets just fetches the balance you have on each account from the blockchain and display them to you. It wouldn't change your balance.