Merge Replication Filter does not work at Subscriber

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I am setting up a SQL Server Database Filter based Merge Replication between
Publisher (on Server Global) & Subscriber (on Server Site) using
EXCHANGE_TYPE '1' (Data only needs to be merged from Subscriber(Site) to
Publisher(Global) - Upload). You can consider this as a Central Subscriber
model with multiple Publications based on Filter "Siteid" push Data to
Central Subscriber Global. I have created all the Publications in the Central
Publisher Database Global (Normally central subscriber model will have
Publications on each site but I did wanted to do that due to Maintenance &
security issues )

Also I have set up conflict resolver "SQL Server Subscriber always wins the
conflict" since I want my Subscriber changes to override changes done at
Publisher.

However, I am facing this issue:

Even if I add a row at subscriber Site that is not part of Filter (it goes
into the Publisher Global). I do not want the rows other than filter clause
to replicate to Central Hub.

Any assistance is highly appreciated!

Database : SQL Server 2000 SP3a
OS: Win2003 (No Service Pack)
.

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