Unloading the goods to the site. Bitrix

It is not necessary to set up automatic unloading of goods from two vendor sites. These two vendors give it away in different formats. Suppliers have different category names and subcategories of goods.
The attached file says how its implemented now.
Task: Resuscitate the unloading, before adjusting to work on the machine. With the catalog carried out by SEO work, they should remain intact. Sections and subsections of the catalogue have gone down. This needs to be adjusted if the old implementation is finalized.
If this option is not appropriate, you need to offer a solution. Perhaps a parcel from the sites or unloading in 1C or file exchil, and then downloading the goods to the site. Either your option.