- Install VSCode and the powerapps extension in vscode (Power Apps Guide - Code - The new easier way to pack and unpack canvas app source code - Power Apps Guide - Blog)
- download your app, and extract it using the extension (see link above for detailed instructions):
pac canvas unpack --msapp .\myapp.msapp --sources .\myapp\
- Decide on a single label that will be your master label, or a variable name that will contain your defaults. we will need the name of that label or the variable for later - lets call it XYZ for now.
- open the app folder in vs code, and do a find and replace with the following settings:
pac canvas pack --sources .\ --msapp c:\code\myapp.msapp