Index: trunk/ippTools/src/difftool.c
===================================================================
--- trunk/ippTools/src/difftool.c	(revision 27150)
+++ trunk/ippTools/src/difftool.c	(revision 27210)
@@ -730,5 +730,5 @@
         PXOPT_COPY_TIME(config->args, where, "-dateobs_begin", "rawInput.dateobs",  ">=");
         PXOPT_COPY_TIME(config->args, where, "-dateobs_end",   "rawInput.dateobs",  "<=");
-        PXOPT_COPY_STR(config->args, where, "-filter",     "rawInput.filter", "==");
+        PXOPT_COPY_STR(config->args, where, "-filter",     "rawInput.filter", "LIKE");
     } else {
         PXOPT_COPY_S64(config->args, where, "-exp_id", "rawTemplate.exp_id", "==");
@@ -737,5 +737,5 @@
         PXOPT_COPY_TIME(config->args, where, "-dateobs_begin", "rawTemplate.dateobs",  ">=");
         PXOPT_COPY_TIME(config->args, where, "-dateobs_end",   "rawTemplate.dateobs",  "<=");
-        PXOPT_COPY_STR(config->args, where, "-filter",     "rawTemplate.filter", "==");
+        PXOPT_COPY_STR(config->args, where, "-filter",     "rawTemplate.filter", "LIKE");
     }