How to remove a duplicate filter in an online store on OpenCart?

Question

opencart

Faced the problem of duplicate filters and the lack of search results for them.
Previously, there were repetitions of one attribute name in one position, but in this case, when the filter with these attributes was enabled, it displayed search results involving these positions. Eliminated repetitions, cleared the cache.
I checked the entire group of positions in this catalog, and made sure that there were no duplicate attribute names.
But in one section of the menu, and in its 2 subsections, duplicate filters remained, without search results for them.