You can Import on Unpublished weeks. When you Import a saved template or previous week the shifts will be copied into that week.
Note that if your schedule view is filtered to only certain Categories or Positions then when you click Import you will only bring in those types of shifts that exist in the template or other week. Ex. if you filter on Cashier and Import a template that contains other positions – all you will import is the Cashier shifts.
Check to be sure you are not filtered and if still having trouble you can view the template in the SCHEDULES> Templates section. There you can confirm that the shifts you are expecting to import exist in that template.
why import wont work