Typically this problem occurs because eBay has updated the tree of these categories.
For example the category “Wines, coffee and gastronomy> Whiskey and liqueurs> Other liqueurs” no longer exists and has been diverted to “Food and drink> Alcoholic and pre-mixed drinks> Whiskey”.
Fastbay allows you to update the categories directly from eBay via a button, but deliberately does not delete the obsolete categories as in many cases
eBay automatically “hijacks” products in the new categories, this saves you time by avoiding to redo the catalog mapping in case of eBay side updates.
However the specifications are added by eBay only in the new categories, making a remapping operation sometimes unavoidable.
If you find yourself in this condition, you must therefore download the updated categories from eBay and map between the category of the site and the updated eBay one,
then requesting the specifications in the new category.