Distinction not drawn between tnt and tnt_action

Issue in .https://github.com/AdobeDocs/analytics.en/help/export/analytics-data-feed/c-df-contents/datafeeds-reference.md

The documentation that (post_) `tnt` "Represents all tests currently qualified for" while (post_) `tnt_action` "Represents all tests the hit qualified for" does not draw a meaningful distinction between the two. For a row in a file of [hit data](https://experienceleague.adobe.com/en/docs/analytics/export/analytics-data-feed/data-feed-contents/datafeeds-contents#hit-data-files), I expect "currently" to mean the same thing as "the hit", but my data instead has post_tnt_action empty in over 75% of the rows where post_tnt is not empty.

Start with help/export/analytics-data-feed/c-df-contents/datafeeds-reference.md and review the linked hit-data-files documentation. Compare the descriptions of tnt, post_tnt, tnt_action, and post_tnt_action against the reported data, then clarify the distinction so the documentation explains why the fields can differ.

Written by the indexing model from the issue text.