With MyShiftPlanner Pro, you can use the Multiple Patterns feature to change your rota but keep your old shifts in the calendar.

-Tap on the COG

-Tap Patterns

-Tap Start a new rota+

-Select your new rota and add start date after your current rota.

-Hit Next and Save your rota to your calendar.

-You’ll now see two rotas, one Current and one for the future.