- fixed the Punch Gerber Tool bug that did not allowed the projects to be loaded or to create a new project. Fixed issue #456

- in Tool Subtract added an option to delete the source objects after a successful operation. Fixed issue #455

appGUI/preferences/PreferencesUIManager.py

@@ -538,7 +538,10 @@ class PreferencesUIManager:
             "tools_solderpaste_speedrev": self.ui.tools_defaults_form.tools_solderpaste_group.speedrev_entry,
             "tools_solderpaste_dwellrev": self.ui.tools_defaults_form.tools_solderpaste_group.dwellrev_entry,
             "tools_solderpaste_pp": self.ui.tools_defaults_form.tools_solderpaste_group.pp_combo,
+
+            # Subtractor Tool
             "tools_sub_close_paths": self.ui.tools_defaults_form.tools_sub_group.close_paths_cb,
+            "tools_sub_delete_sources":  self.ui.tools_defaults_form.tools_sub_group.delete_sources_cb,
 
             # Corner Markers Tool
 

appGUI/preferences/tools/ToolsSubPrefGroupUI.py

@@ -38,5 +38,14 @@ class ToolsSubPrefGroupUI(OptionsGroupUI):
         self.close_paths_cb = FCCheckBox(_("Close paths"))
         self.close_paths_cb.setToolTip(_("Checking this will close the paths cut by the Geometry substractor object."))
         self.layout.addWidget(self.close_paths_cb)
-
+        self.delete_sources_cb = FCCheckBox(_("Delete source"))
+        self.delete_sources_cb.setToolTip(
+            _("If checked will delete the source objects.")
+        )
+        self.delete_sources_cb = FCCheckBox(_("Delete source"))
+        self.delete_sources_cb.setToolTip(
+            _("When checked will delete the source objects\n"
+              "after a successful operation.")
+        )
+        self.layout.addWidget(self.delete_sources_cb)
         self.layout.addStretch()