In Sales & Orders under Feed Tool > Products, you will find the ability to Import Store Products.

This will trigger a manual import of all products from your e-commerce store and then will automatically send the feed to your connected channels.

This will also remove any inactive products in your store, from the feed:

When you trigger this please keep in mind that it will take several minutes for everything to completely be imported and sent. Most channels (such as Google) can take up to 2 hours to display any changes made to products so just keep that in mind.