How to import the data from JTL to shopware Subshop?

Q1) I have transfered magento data into JTL-Wawi now i want to transfer data in shopware subshop ???what would i do ??

because i am transfering the data in to subshop after creating subshop and connecting my shopware site to JTL but the data transfer in Main shop and my subshop data conflict to Main shop

Kindly suggest what would i do ??

Q2) Is it necessary a shopware license to create subshop ???