Index: /branches/eam_branches/ipp-20111122/Ohana/src/relastro/src/UpdateObjects.c
===================================================================
--- /branches/eam_branches/ipp-20111122/Ohana/src/relastro/src/UpdateObjects.c	(revision 33605)
+++ /branches/eam_branches/ipp-20111122/Ohana/src/relastro/src/UpdateObjects.c	(revision 33606)
@@ -136,6 +136,12 @@
 	// allow a given photcode or measurement to be
 	// ignored if the error is NAN (for photcode, set astromErrSys to NaN)
-	if (isnan(dX[N])) continue;
-	if (isnan(dY[N])) continue;
+	if (isnan(dX[N])) {
+	  measure[k].dbFlags &= ~ID_MEAS_USED_OBJ;
+	  continue;
+	}
+	if (isnan(dY[N])) {
+	  measure[k].dbFlags &= ~ID_MEAS_USED_OBJ;
+	  continue;
+	}
 
 	// add systematic error in quadrature, if desired