Copy previous week incomplete goals allows duplicates

Not a major issue but if you click the button copy previous weeks uncompleted goals, you are able to do it again and again.

I would expect that once you have copied them you can't recopy or that it wouldn't copy duplicates. 

I forgot that I copied them and hit the option again and duplicates were created. I tried it a couple of times and I can copy them/duplicate them as many times as I like...