Sage one- merging to companies or transferring data from one to the other

Hi, 

I have a client on Sage where which has 2 companies on Sage.

Now the one company has the prior year data and the current year bank processing, but the other company has the current year invoice processing.

Is there a way to merge the two together or export all the data from the company with invoice processing into the other one which has the prior year data.