Around Christmas we have a problem with orders and in the end it looks that is problem from one of the extension. So while we search a issue and try to solve something else happens. All the attributes that are in layered navigation are gone, except for Brand and Product line. For all of the rest attributes when I check for the items with getItemsCount() I get a 0. Which is not true. I try to refresh all of the indexes and clear cache, the final result is the same.
When I go deeper and deeper the situation become more and more strange for me.
So i try to edit a Product attribute value, when i click "Save and continue edit" the new value is saved. Example I Open the "Product one" and change "Attribute 1"(it is a multi select field) from "Value 1", "Value 3" to "Value 2" when I click "Save and continue edit" after page refreshed I see message "The product has been saved." and for "Attribute 1" is selected only "Value 2". Then I go and refresh the page with layered navigation and I still see only two filters "Brand" and "Product line".
Then Idecide to go to "Catalog -> Attributes -> Manage attributes" and select the "Attribute 1" attribute. Then Iset the "Use In Layered Navigation" from "Filterable (with results)" to "Filterable (no results)" and save it. Now refresh the page with layered navigation and Isee the "Attribute 1", but all values are inactive. So I return the "Use In Layered Navigation" to "Filterable (with results)" on "Attribute 1" attribute. Now I go to edit the "Product one" product again and when i change the "Attribute 1" attribute for that product and "Save and continue edit", after pagereloadI see the old value are still selected. If i use the same example as on top when I save the product and pagereloadI see the for "Attribute 1" is still selected "Value 1" and "Value 3". Then i decide to refresh the page with layered navigation and now i see the "Attribute 1" attrubute in layered navigation with "Value 2" value active to filter. Then Igo again to edit the product and change some other attribute they seems to be saved normally.
This is really strange to me. Do you have any explanation and fix for it?