Blur transition between 2 animate files

So hopefully I am explaining this clearly. But I was wondering the best way to make a transition between Adobe animate files (html5). I have a scene I have setup in Adobe animate. I have buttons that link to a new Adobe animate file and buttons in that file link to other files. I'm doing it this way to better organize my file scenes. If I need to change it I will. But what if any is the best way to to do a scene transition between the files. For example each animate file had a different picture and I wanted to transition a blur effect between them or maybe even play a movie between them when the button is clicked?  

Thanks for all the help.