by new wallet, do you mean the 2.5.5? That is the newest I have been able to find, and just want to ensure im not on the wrong wallet/chain.

So far as I know, you should just be able to stop your current nexus wallet, ensure you backup your wallet.dat just in case, and swap out the .exe (for windows) or the binary (for Linux) file with the new one. Once starting the new wallet and unlocking for minting, you should be at your same staking rate. I believe (not 100% sure) that you are only penalized once your block weight reaches 100% for a certain amount of time. Switching wallets should be a 2-5 minute procedure and shouldn't cause any loss of staking interest percent.

Also, for the dev/team, I have seem to have found a strange bug. When I load a new wallet on a new PC (Linux), sync the blockchain and add my priv keys...…. I have 0 balance but all addresses show properly.. However, if I do the same but insert a wallet.dat (on windows)  all 22k coins show up just fine and begin staking. On Linux I am just using the daemon built from source, on windows im using the pre-built QT. Thought I should report it