World customers going from 7.3 to 9.3. Has anyone taken the approach of modifying P47011 and P47022

It is my understanding that 9.3 programs P4256 and P40211Z are vastly different than their 7.3 counterparts P47011 and P47022. If we utilize the new 9.3 programs we will have to apply all the mods the have been made to the 7.3 programs over the past few years. This task is difficult enough for numerous reasons but in the case of these two programs, the processes we currently utilize are found in entirely different programs in 9.3.  If the replacement 9.3 programs have sections code which are essentially replicas of the respective 7.3 programs then applying the mods may be relatively straight forward. If the code found in the two 7.3 programs