The relevant ex-post evaluation and explanatory report as well as the other documents from the subsequent partial revision of FINMA Circ. 2017/6 "Direct transmission" are available here.
When FINMA adopts an ordinance or circular, it decides whether and when it will subsequently review the effectiveness of the regulation. Such ex-post evaluations are based on feedback received from stakeholders, practical experience of the regulation as well as the principles of the original impact analysis. It takes into account the applicable laws and focuses on qualitative aspects. FINMA then publishes the results of its evaluations in a report.