[Solved] Can you move a tempo map?

I've tempo mapped a live piece of music, but did it wrong. The down beat is happening in the metronome on beat 2. I wonder if anyone knows how to nudge the entire tempo map forward or backwards in a project. I tried cut and paste, but nothing happens.

Thanks Bapu,
I tried it before and it didn't seem to work, but that was after I had zoomed in to get an accurate paste, therefore when I pasted it I didn't see any changes. This time I zoomed out and saw that it had indeed worked. At present my whole project is based on the wrong downbeat. Ideally at this point I'd like to just cut and paste the whole project (tempos and all) forward 3 beats. Who knows? maybe it will work.