Itinerary-Attraction commands when itinerary not yet selected error message

[bchenghi]

After creating an Itinerary, and not selecting it, I tried add-itinerary-attraction 1 st/1000 et/1100 day/1. Which showed "This attraction already exists in the itinerary." as the error message although no itinerary was selected. No commands were executed on the itinerary yet, so the itinerary is empty as well.
This can be reproduced by creating a new itinerary, then executing add-itinerary-attraction 1 st/1000 et/1100 day/1.