Moving a set of printers from windows server to other windows server can be done one by one, but it involves Configuring IP addresses over again and drivers and all other printer settings.
A good way for migrating mass printers is using either the print management which is a windows 2003 R2 add on and can be found in windows 2008 also.
Another way is to use the print migrator which is a beautiful Microsoft tool for these scenarios:

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