What are the exemptions for TM30 reporting for work permit holders at Chamchuri Immigration Office?

Does anyone know about this exemption for TM30 reporting when work permit and visa extension were processed at Chamchuri immigration office?

News article from Bangkok Post :

“Special categories of work permit holders are also reported to be exempt from registration. These individuals are those whose work permits are handled by the “One-Stop Service Center” at Chamchuri Square, designed for Board of Investment privilege holders; Smart visa holders, and also some companies with large capitalisation.”