Launch the AnyList app, then navigate to the Settings tab.
Tap on Reminders App Import.
Turn Import from Reminders on.
Turning Import from Reminders on will cause AnyList to create a list in the Reminders app for each list in AnyList. When you launch AnyList, it will check these lists in Reminders to see if they contain any items. If they do, you will be prompted to import the items. The items will then be deleted from Reminders.