Change IP on SonicWall NSA 220

Hello, We're moving our SonicWall NSA 220 to another location and also switching ISP, so all the public IP's will be changed.
I want to keep everything on the inside (internal) the same. including internal IP (which is 10.10.x.x).
I have SonicPoints connect on other ports (but I don't think if will affect that).
I also have File Servers and FTP servers (but again they're internal and I used NAT for those) so again I don't think changing Public IP's will affecting them. (I guess I just have to change the appropriate public IP to the appropriate FTP server.)
Hope these make sense and hope someone can help.
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Gajendra RathodSr. System AdministratorCommented:
First change the public IP address and then change the NAT rule.
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