Moving accounts to a new cPanel server / DNS questions

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http://forums.cpanel.net – Hello, I'm working on moving accounts from an old cPanel server to a new one. The thing is, only few accounts are actually using it as a webserver, most are just using the email and dns functions. The websites for the most is hosted elsewhere. So my question is when I move the accounts, will the new cPanel change the A record for those sites hosted elsewhere to his IP? How can I move this without any DNS changes being made, so I can just manually change the few accounts that have websites at this particular server? (HowTos)