reinstallation problem of WP ecommerce

Hello,
I did delete and reinstall wp ecommerce. THe pages are all still in my admin and the navigation path is now wrong. How can I correct it?

for your information:
shop: https://www.vanetroamoto.com/boutique/
goes to: https://www.vanetroamoto.com/boutique/checkout-2/
instead of : https://www.vanetroamoto.com/boutique/checkout/
as well as the https://www.vanetroamoto.com/boutique/transaction-2 instead of /transaction.

thanks for your help