After changing a parameter in a script for one of my application deployments and after I update the DPs so the change can be propagated to them, the application still runs in the manner it did prior to the change. Why is this?

I have Pull DPs configured with one source DP. I am trying to configure an application deployment using the PS App Deployment Toolkit and it works perfectly, but when I make a change in the script for the MSI to run silently and to not reboot after installation (-Parameters "REBOOT=ReallySuppress /QN") it is still displaying the installation progress display box as if the "/QB-!" switch is still being used. 

How can I ensure that the change gets propagated to all the DPs so the application runs as expected?

Thank you all