Some 4-level categories are missing in the Topic facet on the search results
NAD data managers are worried that when you select the National accounts topic from the Data Explorer home page (https://data-explorer.oecd.org/?lc=en&fs[0]=Topic%2C1%7CEconomy%23ECO%23%7CNational%20accounts%23ECO_NAD%23&pg=0&fc=Topic&bp=true&snb=95), there is no topic "Economy > National accounts > GDP and non-financial accounts > GDP and components" displayed in the filter.
We can see that although "GDP and non-financial accounts" says that there are 46 dataflows under it, the 3 returned categories have only 32 dataflows under it.
We know that there are dataflows categorised with "GDP and components", these can be found for example by searching for "expenditure approach" (https://data-explorer.oecd.org/?lc=en&tm=expenditure%20approach&pg=0&fc=Topic&snb=13)
Why are not all categories displayed under "Topic" facet?