Enable multiple source models for an app


Hello Community Members,


We are trying to move from a multi-app set-up (Dev, Test, Prod) for our UX apps to a single app enable with multiple source models.

However, in trying to do that I realized that there's no way I can change this setting at an app level; now I end up needing to make that change in ~ 6*20 pages.

Since there is no multi-select option on the Apps->Pages either, can someone suggest a faster/more optimal way to do what I am trying to? 


Thank you!