Font and Font Size Keep Changing from Default

Hello,

I am working on a set of modules, all of which need to have the same font due to branding purposes. I created one module with the look and feel I want, and I now want to apply that formatting to the rest of the modules.

I opened the module I'm working on next and imported the completed module into a new scene so that I can easily use the format painter to copy the formatting between the two modules. However, all the fonts have defaulted back to Articulate from my original Myriad Pro Light in both the completed module and the new module.

I set my theme font and slide master font to Myriad Pro Light, which didn't change anything. I also tried closing out of the story file after saving the font default and then reopened it, but that didn't work either.  but nothing has helped. It keeps changing it back to the Articulate font. Am I doing something wrong? I really don't want to have to change all of these manually.