Use Update Values to edit:
Note: You can automate Inventory Control Display Quantity with this feature.
CSV Format to update eBay values
Create a CSV with
SKUs (or Item IDs)
And a corresponding value:
Variations must use an SKU to edit via CSV.
Only use Item IDs for non-variation listings.
Step 2 - Upload your CSV
Navigate to: Products → Listings Manager → CSV Import
Click the Update Values button and upload your CSV.
Select (& save) mapping presets
+ automatically control quantities that involve Inventory Control.
Warehouse Inventory editing provides options to control the Display Quantity if restocked or set out-of-stock: