You are able to add products Swift Distribution Nested with Stock Sync. Just choose on Swift Distribution Nested template after choosing to add new products to store. 

1. Go to Setup New Feed > Choose Add new products to store.

2. Choose or search for Swift Distribution Nested template.

3. You need to fill up the Username and Password from your Swift Distribution Nested profile.  

4. Click Next to the field mapping section.

These are the available fields that can be added with Stock Sync. 

SKUVariant SKU
Variant GroupHandle
priceVariant Price
quantityVariant Inventory Qty    
product titleTitle
BarcodeVariant Barcode
DescriptionBody (HTML)
Variant Option 1Option1 Value
Variant Option 2
Option2 Value
Variant Option 3Option3 Value
Requires ShippingVariant Requires Shipping
Inventory Policy Variant Inventory Policy
Product Type (Custom)Type
URL / HandleHandle
Product ImagesVariant Image 
CostCost per item