Bitrix search by infoblock property does not find products?

Question

1C-Bitrix

The essence of the problem is this, some of the goods are not found by the property of the infoblock.
The property of the infoblock Manufacturer's article , in the property there is a check mark participates in the search, re-indexing is done. Some of the goods are found, some are not. There is also another property Article , according to this property the same product that was not found by Manufacturer's Article , is located by Article .
Starts to find a product by manufacturer's article , if you do the following:
find the product in the admin panel, and just resave it.
any thoughts?