uCommerce Sync allows you to synchronize all uCommerce settings (and optionally stores and products) between different environments. Hopefully this tool will make your life easier when you're deploying changes from your local development environments to the test and production environments.
Once installed, uCommerce Sync will add a "Synchronize" node to the uCommerce section of the Umbraco backend. This "Synchronize" node contains nodes for exporting and importing uCommerce settings.
During export, uCommerce Sync serializes all uCommerce settings to a set of files under /App_Data/UCommerceSync/. All you then need to do is copy these files to the same location on your target environment and use uCommerce Sync to import the uCommerce settings. The settings are serialized as XML, so this is also a great tool for version controlling the uCommerce settings for your project.
Please note that there are different packages for Umbraco 6 and Umbraco 7!