Updating Global drawings

I want to know if this is how toon boom is meant to work. When you put a drawing or collection of drawings into the global library or even the local library, when you update them shouldn’t the drawings on the time line update. At the moment the drawing in the library gets updated but the drawings on the timeline are not effected and seem to be treated as seperate and not reference the drawing in the library.

This seems like a waste of time as it is just a simple copy paste clipboard and not a library that will reference and update your drawings.

The only way around this is to do all your aniamtion in the one scene. (stupid don’t you think). Even the most basic flash program can reference drawings why can’t toonboom.