Possible to move multiple layers from one Illustrator file to another?

This doesn't preserve the layer hierarchy. 

Is it possible to duplicate a layer and avoid having both the parent and sublayers automatically get "copy" appended to the end of the layer name? I don't mind it for the parent layer but it becomes a major pain when having to also rename sublayers. Essentially we use this to track design options and each sublayer gets a graphic style applied for consistency. This way it's much easier to maintain or purge out old obsolete options. An ideal solution might be to specify the new layer name after running the 'Duplicate [Layer]' command rather than the command blasting all new layers with the 'copy' text appended to the end.

Thoughts on this anyone?

Thanks so much! I had no idea you could do that in Illustrator! This shortcut will save me TONS of time in the future! Can't believe I spent so much time in the past copying and pasting individual elements. Haha

In my case, I got the error underneat, although both documents have the same size.

Solution: use 'Place in Front or Place in Back', which past the layer on the same position.

Sorry to resurrect this post, although i suppose it's not really THAT old.

I use Paste Remembers Layers for some very specific applications, but have it turned off most of the time because it can break other parts of my process. However, I'm attempting to build a new procedure for my mockup artists which requires specific layer hierarchy to be retained from one doc to the next. However, I've found that the oh so handy "paste remembers layers" option does not do anything for blank layers...

Does anybody know of a way to copy a layer (full of blank sublayers) from one document to the next? I may end up just scripting the process, but if i can avoid that i'd be very grateful.

Thanks.

Thank you SOOO much. I knew there had to be a way to do this.