Bringing bind to higher level

[Szemerédy Gábor <gabor rc-subotica co yu>]

Hello!
We have RH 6.0 and bind-8.2-6.
If  I try to upgrade bind to higher level, should I create again my
existing zones
or the upgrade accepts defined zones?
In the event of problems in upgrading will I be able to return to my old

bind?
Where is the old bind.rpm on my system? (Have I to download it again?)
Thanks!

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