Problem In Deployment Of Packages Into 2 Different Servers

I have 2 servers. DWTEST and DWSQL1. I developed my packages connecting to DWTEST in the design time. I have 32 packages, one of them is the master one and the others are child packages.

package PM calls P1, P2, P3,.......P31

i have 2 data source in my project. RDS and S0, both setup to connect DWTEST in the design. i defined rds_connection_string and s0_connection_string variables in my master package and created an XML config file and put those variables into that config file.

C:PROJECTSDEVELOPMENTSSIS ConfigurationsSERVER.dtsConfig

<DTSConfiguration>



- <DTSConfigurationHeading>


<DTSConfigurationFileInfo GeneratedBy="TC sql" GeneratedFromPackageName="PM" GeneratedFromPackageID="{CBE946D0-279F-44F6-80A3-83D056C1E36C}" GeneratedDate="11/10/2006 10:50:44 AM" />
</DTSConfigurationHeading>

- <Configuration ConfiguredType="Property" Path="Package.Variables[User::rds_connection_str].Properties[Value]" ValueType="String">


<ConfiguredValue>Data Source=DWTEST;Initial Catalog=RDS;Provider=SQLNCLI.1;Integrated Security=SSPI;</ConfiguredValue>
</Configuration>

- <Configuration ConfiguredType="Property" Path="Package.Variables[User::s0_connection_str].Properties[Value]" ValueType="String">


<ConfiguredValue>Data Source=DWTEST;Initial Catalog=S0;Provider=SQLNCLI.1;Integrated Security=SSPI;</ConfiguredValue>
</Configuration>
</DTSConfiguration>

built the project into directory C:PROJECTSDEVELOPMENTS1_REUSABLE_DATA_STORES1_REUSABLE_DATA_STOREinDeployment

when i deploy my packages into DWTEST and run them as a SQL Server Agent job they work because data sources are signing to DWTEST already.

when i am deploying them(using the same manifest file in the deployment directory i wrote above) into the server DWSQL1, i select config file source as:

C:PROJECTSTESTINGSSIS ConfigurationsSERVER.dtsConfig

and update data source strings in it to DWSQL1:

- <DTSConfiguration>


- <DTSConfigurationHeading>


<DTSConfigurationFileInfo GeneratedBy="TC sql" GeneratedFromPackageName="PM" GeneratedFromPackageID="{CBE946D0-279F-44F6-80A3-83D056C1E36C}" GeneratedDate="11/10/2006 10:50:44 AM" />
</DTSConfigurationHeading>

- <Configuration ConfiguredType="Property" Path="Package.Variables[User::rds_connection_str].Properties[Value]" ValueType="String">


<ConfiguredValue>Data Source=DWSQL1;Initial Catalog=RDS;Provider=SQLNCLI.1;Integrated Security=SSPI;</ConfiguredValue>
</Configuration>

- <Configuration ConfiguredType="Property" Path="Package.Variables[User::s0_connection_str].Properties[Value]" ValueType="String">


<ConfiguredValue>Data Source=DWSQL1;Initial Catalog=S0;Provider=SQLNCLI.1;Integrated Security=SSPI;</ConfiguredValue>
</Configuration>
</DTSConfiguration>

When i run SQL Server Agent Job i defined in DWSQL1(forcing it to use DWSQL1 data source in step definition), my master package PM connects to DWSQL1, and my child packages don't use my config definitions and connect to DWTEST which is defined in the design time.

How can i force all my packages to connect DWSQL1 server using the same built files in deployment directory WITHOUT editing my packages(recreating config files or changing the definition of Data Sources and then built the project again) in Visual Studio?

Thanks to you for reading my long question...