Run Time in Production Journal

By mistake I told to users to enter run time as machine’s running time for producing 1 KG of finished good, in the production journal’s output line. Now I came to know that, it is the time duration to produce entire output quantity. Now these production orders are with status Finished. Can I chnage the status back to Released (using code) and post the adjustment entries for the mahcine times using output journals?

Nav 5.0 sp1 IN