no domain work after i change the ip

Hello, i have 2 dedicated server at my home with 2 separate internet contrat, each server have they own ip and internet,  but the problem is that a few days ago my provider change the ip to all customers. and after i notice that my servere are down i find out that now i have 2 new ip for my servers.  i edited the drdicated ip and the ip for name servere ( ns1 and ns2 ) but after 2-3 days no domain from that servere not works. i mean i ca't noonect ad the server , how can i doo this coz i want to save everithing so i can install a fresh cwp, i can't connect via ftp, say that the pasword is not good, but if i use putty or i simple login in my pasword it work, i really need to save what i have on that dedicates, can you help me to make the ftp to work?

happy easter

UP Pls

I know this is over a month old and you've probably either fixed the problem or reinstalled everything, but . . .

Have you tried changing the ip addresses in the individual DNS Zones ?

DNS Settings > List DNS Zones and then click Edit Records for each zone.

Don't forget to restart Bind DNS Server after saving your changes.

I hope this helps