Import Entire Cubase Song - 5.5.3

I often need to import an entire Cubase song, including tempo maps and markers into another Cubase Song. Is there is simple way to accomplish this. Currently I an opening one song, saving it, opening another, activating it, select all, click back to the other song, paste, file save. I usually lose my tempo maps and markers. Its time consuming as well as a pain.

Any thoughts?

Thanks… TP