Your products already exist in your catalog with combinations and you would like to add a new attributes group to create new combinations for these products.
In most cases, all necessary combinations attributes groups have been created at the same time.
If another group needs to be added for a product that already has combinations, here are the steps to follow:
With Store Commander's CSV export tool, run an export of the products and their existing combinations using the name of the products and the combinations references
Delete those combinations from the Combinations grid in Store Commander?s interface
Modify your CSV file generated accordingly (adding the attributes of the new group)
Import the new data
This procedure is necessary because Store Commander cannot recreate and recalculate all attributes combinations when adding a new attributes group to a product already using combinations.
Refer to this article for the detailed procedure.