I agree with the post above that it can be tedious and time consuming to re-validate all processes. However, the process is very critical to make sure that the equipment is producing the same results in each location. If the equipment is being assembled in different location then the results can vary due to errors. Instead of re-validating each step, the quality team can identify certain critical steps that are most likely to affect the result. If those results are favorable then not all the steps have to be re-validated. I do not experience in this area but it seems more logical to me.