When you delete or deactivate an FBM listing on Amazon, it can stay active in SKULabs after a listings sync. This is on purpose. Amazon's listings reports are not always reliable, and keeping listings active protects your stock sync.
Why deleted Amazon listings stay active in SKULabs
SKULabs imports Amazon listings from the listings reports Amazon provides. A listings sync never deactivates an Amazon listing just because it is missing from the report, because:
Listings you are actively selling can be missing from Amazon's report for a while.
Amazon marks FBM listings inactive when they run out of stock. If SKULabs deactivated them too, it would stop pushing stock to them, and they could not come back in stock when you restock.
In Amazon's report, out-of-stock listings and deleted listings can look the same.
The Import Listings Active Status setting
Each Amazon store has an Import Listings Active Status setting under Settings > Stores (edit the Amazon store). It is off by default, and we recommend leaving it off.
The Import Listings Active Status setting and its recommendation tooltip.
Off (recommended): every Amazon listing stays active in SKULabs, so stock sync keeps working when a listing goes out of stock and comes back.
On: listings that Amazon reports as inactive become inactive in SKULabs. Do not turn this on while stock sync is on for the store. Amazon deactivates listings that run out of stock, which would disconnect SKULabs from those products.
Either way, a listing you deleted on Amazon disappears from Amazon's report, so SKULabs does not deactivate it automatically.
How to deactivate Amazon listings in SKULabs
Go to Inventory and open the Listings tab.
Tick the listings you deleted on Amazon.
Click Actions > Deactivate listings and confirm.
If you relist the product on Amazon later, select it again and use Actions > Activate listings.