As you know PrestaShop and StoreManager require the Product “Reference” and the “Combination Reference” in order to sync product Qty with Store Manager Product Import addon.
We have many suppliers with inventory files with only reference to the combination as a stand-alone product. So, we have no way of synchronizing our inventory with many of our suppliers.
My suggestion for Automated Product Import addon:
To have another source file in our local machine holding the product Reference (main product SKU) for each of the individual combinations to allow to match during the sync process with our suppliers.