Copy/Paste Frames w/o Adding Layers

[VaporAction]

I want to be able to copy and paste frames from multiple layers and add them further along in the Timeline without Flash adding new layers...Flash seems to add a new layer with blank frames up to the point you've pasted instead of simply adding the selected frames to the layer you want them in...it's frustrating because it creates redundant layers, that increase your file size and make a mess of the timeline...

[Ogre11]

you could copy the frames one layer at a time