Getting Bitmap object at runtime

[Nabren]

When you load an external SWF at runtime and instantiate a symbol that contains a Bitmap object in the .fla file the type of the Bitmap is actually Shape at runtime. Without exporting the object for ActionScript is there any way to get the actual Bitmap object without using bitmapData.draw on a new object?

Where I am going with this is I would like to use the object where a Bitmap type is needed without creating a new bitmap object for memory reasons but it seems like Flash turns this into a generic Shape object at some point.

[Nabren]

After doing some research it seems like I am basically stuck unless I give it a linkage name in the library which is not an option because this is a .swf that is going to be loading dynamically on an iOS device.

Oh well =/