diff --git a/scripts/Modules/Filters.pm b/scripts/Modules/Filters.pm
index 17ae6f5..9fd3193 100644
--- a/scripts/Modules/Filters.pm
+++ b/scripts/Modules/Filters.pm
@@ -140,12 +140,11 @@ sub get_default_configs {
 }
 
 sub build_filter_clause {
-    my ( $experiment_dir, $config_name ) = @_;
+    my ( $experiment_dir, @config_names ) = @_;
 
-    return "" unless defined $config_name && length($config_name) > 0;
-
-    my $regions = $CONFIGS{$config_name}{regions};
-    return "" unless defined $regions;
+    # Drop empty ones, rest is combined
+    @config_names = grep { defined && length } @config_names;
+    return "" unless @config_names;
 
     return ""
       unless defined $experiment_dir && -f "$experiment_dir/system.elf";
@@ -153,25 +152,30 @@ sub build_filter_clause {
     my $elf = "$experiment_dir/system.elf";
 
     my @filters;
-    for my $region (@$regions) {
-        my ( $start, $end, $col );
+    for my $config_name (@config_names) {
+        my $regions = $CONFIGS{$config_name}{regions};
+        next unless defined $regions;
 
-        if ( ref($region) eq 'HASH' ) {
+        for my $region (@$regions) {
+            my ( $start, $end, $col );
 
-            # Single-function form: resolve [start, end) via symbol + size.
-            $col = $region->{col};
-            ( $start, $end ) = Util::elf_sym_range( $elf, $region->{func} );
+            if ( ref($region) eq 'HASH' ) {
+
+                # resolve [start, end) via symbol + size
+                $col = $region->{col};
+                ( $start, $end ) = Util::elf_sym_range( $elf, $region->{func} );
+            }
+            else {
+                # [start_sym, end_sym, col]
+                my ( $start_sym, $end_sym );
+                ( $start_sym, $end_sym, $col ) = @$region;
+                $start = Util::elf_sym_addr( $elf, $start_sym );
+                $end   = Util::elf_sym_addr( $elf, $end_sym );
+            }
+
+            next unless defined $start && defined $end && $end > $start;
+            push @filters, "$col NOT BETWEEN $start AND @{[$end - 1]}";
         }
-        else {
-            # Linker-range form: [start_sym, end_sym, col].
-            my ( $start_sym, $end_sym );
-            ( $start_sym, $end_sym, $col ) = @$region;
-            $start = Util::elf_sym_addr( $elf, $start_sym );
-            $end   = Util::elf_sym_addr( $elf, $end_sym );
-        }
-
-        next unless defined $start && defined $end && $end > $start;
-        push @filters, "$col NOT BETWEEN $start AND @{[$end - 1]}";
     }
 
     return "" unless @filters;