Upgrade 4.9.7->9.1.0, 8.1.2-9.1.0

[Balgansuren]

Hello,

Currently, we are using Solaris 2.6/SPARC and Solaris 7/SPARC.
It includes BIND-4.9.7 (primary) and BIND-8.1.2 (secondary).

I want to upgrade it to 9.1.0, but unfortunately I don't know exact
procedure of upgrade. I have compiled/installed source of 9.1.0 on
Solaris/SPARC (in /usr/local). I need help to convert old 4.9.7, 8.1.2
config file to 9.1.0.

Also I don't know 9.1.0 configuration file structure.

Please send me suggestion and helpful information.

Thanks,
Balgaa
System Admin