BIND Configuration – How to Forward Reverse DNS Queries to Another DNS Server

I've got 2 domains in my environment. One of them is an active directory domain for 'myproductionlab.local' at 10.60.0.0/16
Then I have a debian box running bind9 for a domain, 'mytestlab.local'
I have added an entry into my named.conf.local:

zone "60.10.in-addr.arpa" {
        type forward;
        forwarders {
                10.60.10.5;
                10.60.10.7;
                10.60.10.9;

        };
};
zone "myproductionlab.local" {
        type forward;
        forwarders {
                10.60.10.5;
                10.60.10.7;
                10.60.10.9;

        };
};

the debian box is configured to have 127.0.0.1 for DNS resolution and there are no forwarders globally configured.

name resolution resolves just fine:

nslookup mymachine.myproductionlab.local  
Server:     127.0.0.1
Address:    127.0.0.1#53
Non-authoritative answer:
Name:   mymachine.myproductionlab.local
Address: 10.60.10.200

and from the query log:

client 127.0.0.1#36076 (mymachine.myproductinlab.local): query: mymachine.myproductionlab.local IN A + (127.0.0.1)

but reverse DNS isn't forwarded:

nslookup 10.60.10.200
Server:     127.0.0.1
Address:    127.0.0.1#53
** server can't find 200.10.60.10.in-addr.arpa: NXDOMAIN

and from query log:

client 127.0.0.1#40295 (200.10.60.10.in-addr.arpa): query: 200.10.60.10.in-addr.arpa IN PTR + (127.0.0.1)

I've tried a bunch of zone variations:

zone "60.10.in-addr.arpa" {
zone "10.60.10.in-addr.arpa" {
zone "200.10.60.10.in-addr.arpa" {

I've also tried to tcpdump and 0 packets are captured for nslookup 10.60.10.200 but packets are captured for the name.

when I manually specify the DNS server in nslookup it also works fine:

nslookup 10.60.10.200 10.60.10.5
Server:     10.60.10.5
Address:    10.60.10.5#53
200.10.60.10.in-addr.arpa   name = mymachine.myproductionlab.local.