Should we add search_total as a table to be truncated?

Problem/Motivation

In the .module file, it looks like the source only truncates `search_index` and `search_dataset`. We were having some trouble with our search indexes recently, and truncating `search_total` in addition to the other to seemed to resolve our issue. However, I'm not familiar enough with any of these tables to know the consequences of truncating hat table as well. Should it be added?

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes