Some suppliers would like to deliver more than one xml catalog to PM. For example, they may have different kinds of product categories in different catalogs.
Make sure:
This may cause some confusion, and if you do the standard procedure, then products from the first catalog will be removed when importing the second catalog.
Instructions:
You have to make sure that you're deleting the expired products of the supplier only during the first catalog import of the batch.
- In Catalog import image on the newly received Catalog, you have to show products that are in production but not included in any catalog.
- Set All Actions As: Delete. Now all products that have expired will be deleted. Note that also all products received from all other catalogs on the same supplier, will be deleted.

- Show the new products and choose Add for those

- Show the products with differences and choose Replace or Update
- Finally click Approve All:
- In Catalog import image on the catalog #2, click 'Show products that are in production but not included in any catalog'
- 'Set all actions As' None for that one:

- Add all the other actions as you would normally, add for new products, replace for products with changes etc.

- Finally choose Approve all.
Note: If a supplier uses more than 2 catalogs, repeat steps 6 to 9 for all additional catalogs from the same supplier.
Additional Information:
If you only receive one of the catalogs at a time, then you must do the same procedure as above, only you import the new catalog #1 first, and then you re-import the products of the existing catalog #2 after this.