Modifying Routings in PS - Adding Alternate Resources

We have been having issues with some of our work orders not having the necessary alternates defined when data is collected, making it necessary for us to add those resources to the WIP job routing in EBS and recollect - a process that requires quite a bit of time.  I have been playing around in PS and believe I may have found a way to make those changes in the model itself, without having to recollect.  My hope is that, if the same changes are made in EBS, so that both the WIP routing and the PS routing match, I