diff --git a/tools/migration/icinga2-migrate-config b/tools/migration/icinga2-migrate-config
index e23889005..707ebdc5e 100755
--- a/tools/migration/icinga2-migrate-config
+++ b/tools/migration/icinga2-migrate-config
@@ -3957,17 +3957,6 @@ sub dump_service_2x {
             dump_config_line($icinga2_cfg, "\t\t$custom_key = \"$service_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
         }
         dump_config_line($icinga2_cfg, "\t},");
-
-        dump_config_line($icinga2_cfg, "\tmacros += {");
-        foreach my $custom_key (keys %{$service_2x->{'__I2CONVERT_CUSTOM_ATTR'}}) {
-            if ($custom_key !~ /^_/) {
-                next;
-            }
-
-            my $key = substr($custom_key, 1);
-            dump_config_line($icinga2_cfg, "\t\t_SERVICE$key = \"$service_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
-        }
-        dump_config_line($icinga2_cfg, "\t},");
     }
 
     dump_config_line($icinga2_cfg, "");
@@ -4050,17 +4039,6 @@ sub dump_host_2x {
             dump_config_line($icinga2_cfg, "\t\t$custom_key = \"$host_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
         }
         dump_config_line($icinga2_cfg, "\t},");
-
-        dump_config_line($icinga2_cfg, "\tmacros += {");
-        foreach my $custom_key (keys %{$host_2x->{'__I2CONVERT_CUSTOM_ATTR'}}) {
-            if ($custom_key !~ /^_/) {
-                next;
-            }
-
-            my $key = substr($custom_key, 1);
-            dump_config_line($icinga2_cfg, "\t\t_HOST$key = \"$host_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
-        }
-        dump_config_line($icinga2_cfg, "\t},");
     }
 
     ####################################################
@@ -4245,17 +4223,6 @@ sub dump_host_2x {
                 dump_config_line($icinga2_cfg, "\t\t\t$custom_key = \"$service_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
             }
             dump_config_line($icinga2_cfg, "\t\t},");
-
-            dump_config_line($icinga2_cfg, "\t\tmacros += {");
-            foreach my $custom_key (keys %{$service_2x->{'__I2CONVERT_CUSTOM_ATTR'}}) {
-                if ($custom_key !~ /^_/) {
-                    next;
-                }
-
-                my $key = substr($custom_key, 1);
-                dump_config_line($icinga2_cfg, "\t\t\t_SERVICE$key = \"$service_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
-            }
-            dump_config_line($icinga2_cfg, "\t\t},");
         }
 
         dump_config_line($icinga2_cfg, "\t},");
@@ -4353,17 +4320,6 @@ sub dump_user_2x {
             dump_config_line($icinga2_cfg, "\t\t$custom_key = \"$user_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
         }
         dump_config_line($icinga2_cfg, "\t},");
-
-        dump_config_line($icinga2_cfg, "\tmacros += {");
-        foreach my $custom_key (keys %{$user_2x->{'__I2CONVERT_CUSTOM_ATTR'}}) {
-            if ($custom_key !~ /^_/) {
-                next;
-            }
-
-            my $key = substr($custom_key, 1);
-            dump_config_line($icinga2_cfg, "\t\t_CONTACT$key = \"$user_2x->{'__I2CONVERT_CUSTOM_ATTR'}->{$custom_key}\",");
-        }
-        dump_config_line($icinga2_cfg, "\t},");
     }
 
     dump_config_line($icinga2_cfg, "");