PM-2210 introduced retriedStmtIds in write command responses to report the retried statements of a retryable write. But there is a discrepancy between batched inserts to regular collections and batched inserts to timeseries collections. Batched timeseries inserts don't return retriedStmtIds. I don't think this is a bug yet but it could be problematic for future development (e.g. global index? PM-2015?) when we need to make use of retriedStmtIds of internal transactions. Note that the opTime field is missing as well.