Editing menu prefab

Hi all,

I have a pre-existing menu prefab in the software that I am working on, I would like to add a new button called "Weather" to attach a JSON script for retrieving the current weather at my location. The way I added the new button to the menu prefab is as follows: 1)duplicate existng button in the hierarchy view 2)delete the existing prefab in the project view and in the scene view 3)drag the new prefab to the location of the one deleted in 2) 4)drag the new prefab in project view to scene view to instantiate it

Opening the menu works (aside from animation of the new button, which I will fix with the animation tab) but when I click one of the old buttons to bring up one of the app windows via a script, nothing happens. Any suggestions?