DTCC has experienced an increase in the number of customer queries regarding transaction restrictions, generally referred to as “chills” that DTC places on a relatively small number of eligible securities. Occasionally, DTC may need to “chill” certain transactions such as deposits, withdrawals-by-transfers (WTs), deliver orders (DOs) or restrict all these services (commonly referred to as a “global lock”) for operational, risk management or regulatory and compliance reasons. These restrictions may have an impact on Continuous Net Settlement (CNS) eligibility. DTCC recognizes that these actions may create additional operational processing among the member firms and between participants and their customers.
Pretty self explanatory. The Notice concerning the exit from CNS and being designated trade for trade means that the following services have been in fact "chilled", deposits and withdrawal by transfers, and this has in fact impacted Continuous Net Settlement since the CUSIP is no longer in CNS.