Link sections with goods in the online store on CMS Bitrix after transferring the store to another hosting and to another domain

The transition of the online store to:
1. Other hosting,
2. Another domain,
3. At the same time, goods began to be unloaded from another system 1C UT 11.

Herewith:
1. Products are only available through search.
2. Sections of the product catalog are displayed, but without products.

Task:
1. Configure 1C Bitrix so that the products are available in all sections of the Trade Catalog.