Rate Schedules - is there a copy function?

I am setting up rate schedules for the first time in JDE 9.1 and have read and followed white paper 625969.1 - Rate schedule set up and overview. I now have an optimised schedule by item, date, shift  and sequence for week 1. However I really don't want to have to manually key in 52 identical weekly schedules. Is there a way to copy all (or part) of the schedule into weeks 2 - 52?

P3109 (Entering Rate Schedules) has no copy function, unlike P48013 (work orders). I've also looked at exporting / importing grids without success. Any help appreciated, even if it is just to confirm the copy functionality is indeed missing.