Product Price List
There are multiple websites in your Magento store, and all have different base currencies. While creating the Magento Instance in odoo, a Price List will create the base on the Magento website currency in odoo.
While importing the product, add the product price in the appropriate price list based on the product enabled in various Magento websites in your Magento store. Product Pricelist configuration can be found Website Configuration section.
Do not update existing Products?
This Option is visible in the Operation wizard while performing the Import Product or Import Specific Product operation.
By checking this option, If the product is already imported or created in the Magento Layer. Then during the current process, the same Product data will not update.