Index: /issm/trunk/src/m/classes/@pentaelem/PentaCollapseIntoTriaMatrix.m
===================================================================
--- /issm/trunk/src/m/classes/@pentaelem/PentaCollapseIntoTriaMatrix.m	(revision 1002)
+++ /issm/trunk/src/m/classes/@pentaelem/PentaCollapseIntoTriaMatrix.m	(revision 1003)
@@ -14,5 +14,5 @@
 	element=triaelem;
 	element.type='triaelem';
-	element.id=NaN; %not needed here, we are going to destroy this triaelem very soon.
+	element.id=pentaelem.id;
 	element.matid=pentaelem.matid; %same materials, not dependent on element.
 	element.g=pentaelem.g(1:3); %first three grids correspond to the base of the penta element.