Every integration where inventory updates are possible you will see the following options:
Automatic Inventory Updates - When enabled this option will allow us to push inventory updates to channel automatically. We know what listings to update based on your orders. So an order will import, we'll match the order to a product and then any listing linked to that product will get marked to update. Inventory updates typically run every 15 minutes.
Automatic Price Updates - This option is linked to the automatic price updates, if this option is enabled we will push price updates to channel with your inventory updates.
Automatic Listings Download - This option will allow us to download listings from channel, to be able to do inventory updates you need to have your listing downloaded and mapped in Storefeeder.
Download Listings Now - The automatic listings download runs every few hours but if you've just created some listings on channel and need the listings to import sooner you can press this button and it will prompt the listings to import.
Upload Listings - This is the most dangerous option on the list as it doesn't just affect stock. With this option enabled we will have full control of your listings for that channel. This enables you to update listings through Storefeeder, either by going into a listing and pressing save and upload or by doing a bulk listing import to quickly make changes to lots of listings at once. This will overwrite any changes on channel so if you have this enabled it is best not to make changes to listings directly on channel as the next time that listing gets marked for an update we will overwrite the changes you've made. This job typically runs every 15 minutes.