Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods [Tutorial] Main Campaign Modding

I'm having trouble modifying RootTemplates as instructed in the original post. I change the save filepath as directed and save twice, the first save gives an error as the instructions indicate it will and the second save appears to work. I can then make changes such as adding megaboss loot to a crate, to use the example from the original post but when I exit the editor and open the mod again the RootTemplate appears to have reset to its original settings in terms of inventory and save path.

Edit: It's also probably worth mentioning that I am saving after making the changes as well, in both the RootTemplate viewer and in the editor's main window.