By the end of 2009 all the Sp Mortar (12cm) are out of service.
Unit 883 should have a end date of 12/109
Units 884 & 971 can be deleted
Formation 322 get also end date 12/109 (last service in April 2009)
Formations 93/94 need also end date 12/109
The 120mm Mortar (Infantry) Units 174 and 729 were phased out off service sometimes arround 2004-2006
There are discussions going on to bring them back (the officers didn't were very happy to loose such powerful support...)
source (in German):
http://www.infbat70.ch/default.asp?V_ITEM_ID=4665