The Mass Product Actions module provides functionality for a Magento site to assign and reassign attributes, sources, product prices, etc. For example, our extension allows mass assigning of manufacturers to products, or other product attributes on a marketplace with multiple sellers and their products.
Our module is compatible with the default Magento tools. If the marketplace module which was used to convert a Magento 2 into a marketplace also follows the standard practices and recommendations of Magento - it should be compatible with a Mass Product Actions extension.