Updating the dummy Profit Center

Hi Experts

I  am using the PCA with new GL  , here I have created the dummy profit center  also

My query is some of the business transaction  are updated in the dummy profit center

What could be the reason for updating the dummy profit center suppose if I am not give any profit center

Those entries are getting updating  ?

In this new Gl concept how to transfer the balance to exact Profit center ?

Thanks

Sri