Windows Server 2008 R2 DNS - Syncronizing changes to TTL

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http://serverfault.com – I apologize if this has been asked. My searches have not been successful. If I have 2 DNS servers in my Domain and add an A record to 1 server, that record is successfully propagated to the second server. If, however, I edit the TTL for a specific A record, that new TTL value does not appear to replicate to the other DNS server. ex: An A record is created with TTL of 1 day. I later change that TTL to 15min, the second DNS server appears to retain the TTL of 1 day. I attempted to force the update via "Reload" (which could potentially do something other than what I think . . . ) Does anyo (HowTos)