Platform sync keeps your inventory consistent across your sales channels, but two things decide whether a card is actually protected.

The first is the platform. SortSwift writes quantities and prices out to Shopify, eBay, CardTrader, ManaPool, Square, Misprint, WooCommerce and LGS Market on its own. TCGplayer is the exception, because TCGplayer offers no API for writing to a seller account, so SortSwift cannot change your TCGplayer listings. The free Chrome extension runs inbound only: it sends your TCGplayer orders into SortSwift so your stock deducts, and it never writes back to TCGplayer. A sale on Shopify or any other channel will not lower your TCGplayer quantity, and there is no push that makes it happen. To bring TCGplayer down after a sale elsewhere, open Inventory then Picklist, switch to Deduction Mode, click Generate Deduction CSV, and upload the file to TCGplayer under Pricing then CSV Upload. Full automatic two way TCGplayer sync is available with the SortSwiftOS Sync Box.

The second is the listing. SortSwift can only take a card down on a platform where it created or is linked to the listing. A product you made directly in Shopify, an eBay listing from a previous lister, or a card in a game none of your templates covers all keep running independently of SortSwift, and a sale on one of those will not reduce your stock or come off your other channels. To check a card, click Push to Platforms in Inventory: each platform row reads Fully synced, Partially synced or Not pushed.

SortSwift is the source of truth for stock levels. Inventory edits you make directly on a platform do not sync back into SortSwift.