As of SERVER-58410 (5.3+) all writes that are done to the replset.minvalid collection are untimestamped.

However, to this date we are still treating the collection as one that is using timestamp-based durability.

In the event we perform even one write with a timestamp to the collection then WT would complain about a timestamp ordering violation on the next write.

We should consider removing the exception from our code so that the collection is treated as a normal untimestamped local db collection and indicate to WT that untimestamped writes are acceptable.