Do I risk losing data from my existing store during the migration?
The Source (current) Store data isn't affected by the migration at all. In layman's terms, the data (products, customers, orders, etc.) is simply copied and pasted into your Target Store.
So, the migration process is totally safe for the store that is migrated and there is no risk of losing any of the data. We guarantee 100% uptime and data security during the migration with Cart2Cart. In other words, you can keep selling while your Source Store data is being migrated to the new platform.