Index: lams_common/src/java/org/lamsfoundation/lams/dbupdates/patch0013_updateFrom21.sql
===================================================================
diff -u -r8386a3fecd9c7baf6ed69d499016dedd8a83eac6 -refb2ec520c430c4361de9ce26492bc18de4eba2f
--- lams_common/src/java/org/lamsfoundation/lams/dbupdates/patch0013_updateFrom21.sql	(.../patch0013_updateFrom21.sql)	(revision 8386a3fecd9c7baf6ed69d499016dedd8a83eac6)
+++ lams_common/src/java/org/lamsfoundation/lams/dbupdates/patch0013_updateFrom21.sql	(.../patch0013_updateFrom21.sql)	(revision efb2ec520c430c4361de9ce26492bc18de4eba2f)
@@ -37,10 +37,8 @@
 )TYPE=InnoDB;
 
 --  LDEV1929 - Updated script for lesson creation with presence --------------
-CREATE TABLE lams_lesson (
-       learner_presence_avail TINYINT(1) DEFAULT 0
-     , learner_im_avail TINYINT(1) DEFAULT 0
-)TYPE=InnoDB;
+ALTER TABLE lams_lesson ADD COLUMN learner_presence_avail TINYINT(1) DEFAULT 0;
+ALTER TABLE lams_lesson ADD COLUMN learner_im_avail TINYINT(1) DEFAULT 0;
 
 -- LDEV-1299 - Instead of mapping the conditions that open a gate to fictional sequences, there is only a boolean value ------------- 
 ALTER TABLE lams_branch_activity_entry ADD COLUMN open_gate TINYINT;