Index: trunk/ippTools/src/difftool.c
===================================================================
--- trunk/ippTools/src/difftool.c	(revision 26144)
+++ trunk/ippTools/src/difftool.c	(revision 26177)
@@ -816,4 +816,5 @@
     psMetadata *where = psMetadataAlloc();
     PXOPT_COPY_S64(config->args, where,  "-diff_id", "diffSkyfile.diff_id", "==");
+    PXOPT_COPY_STR(config->args, where,  "-skycell_id", "diffSkyfile.skycell_id", "==");
     PXOPT_COPY_STR(config->args, where,  "-label", "diffRun.label", "==");
     PXOPT_COPY_S16(config->args, where, "-fault",     "fault", "==");