change address that bitcoind mines to

[First.Bitcoins]

As a test, I have created an altcoin and have mined it using two virtual servers on DigitalOcean. To keep from having to build each new server, I made an image of one of the old servers and used it to create a 3rd server. When I run bitcoind on the new server, it mines to the same address as the old server (expected of course), but how do I change the address the new server mines to? I ran getnewaddress before starting the mining, but that did not do it.

[Abdussamad]

Shutdown bitcoind. Backup the wallet.dat file and then delete the original. bitcoind will create a new wallet.dat file when it is run again.