Event not bubbling to stage

I’m gonna do my best to explain this…

I have a content clip that gets replaced by a movieClip from the library every time a button is clicked. Some of the content sections contain video. Within the video is a custom event firing that bubbles up through its parent clips all the way until it gets to the clip that was added to the stage on user click. It never goes beyond the content clip to the stage, where I need the listener. Isn’t an event supposed to bubble all the way up to the stage? Why would it ever stop?

The code is in 10 different places in 10 different files or else I’d post it.

Anyone have any ideas?