TDCF Migration - is that final or temporary suspension?

I got a question about my recent blog post on METNO C monitoring namely
TAC bulletin termination:

Is that permanent suppressions or are they rather temporary?

The answer should be "Yes it should be permanent".

Technically there is no "temporal suspension" flag in the Volume C1.
The METNO C message is basically a diff of Volume C1, so there are only
amendment (AM/DM), addition (AA), and deletion (DD). What we see is
only "it's deletion" and no distinction of permanent and temporary
deletions.

In theory a WMO member may "suspend" a bulletin by addition of a
bulletin header followed by a short period after deletion of the same
heading. The miniman theoretical period of suspension is two months,
as the Section 5.1 of the Manual on GTS tells WMO member *shall* notify
the Volume C1 changing at least two months in advance.

But this time it is quite unlikely that the termination of TAC is
retracted. This move is a part of decade-long plan of TDCF Migration of
WMO. Weeks ago the CBS Extraordinary Session in Paraguay recommened
"that Members adding new reports for exchange using the Global
Telecommunication System should not use Traditional Alphanumeric Code to
represent the information" (Rec. 2.3(1)/5, CBS-Ext.(2014)). I think the
recommendation will be endorsed by the Congress next year.