A group of varieties is unloaded in the xls file of the proma

Product https://optmaster.crm-onebox.com/admin/shop/products/59837/edit/ The card displays the Model range field, it is empty An xls file is being generated for uploading to the prom https://optmaster.crm-onebox.com/admin/auto/action/hour/edit/ https://optmaster.crm-onebox.com/media/export/1.xls In the file for this product, 166348393 is written in the ID_group_of varieties field, although the Model range field is empty and according to history there was no such value in the card, explain where it comes from, there was no such thing before, recently noticed.