Geometry: Make import button an undo command.

src/Model/Geometry/Reach.py

@@ -487,8 +487,7 @@ class Reach(SQLSubModel):
         Returns:
             Nothing.
         """
-        list_profile = []
-        list_header = []
+        imported_profiles = []
 
         try:
             list_profile, list_header = self.read_file_st(str(file_path_name))
@@ -505,9 +504,8 @@ class Reach(SQLSubModel):
                         **d, reach=self, status=self._status
                     )
                     prof.import_points(profile)
-                    self.profiles.append(prof)
-                    self._update_profile_numbers()
 
+                    imported_profiles.append(prof)
                 self._status.modified()
         except FileNotFoundError as e:
             logger.error(e)
@@ -515,6 +513,12 @@ class Reach(SQLSubModel):
         except FileFormatError as e:
             logger.error(e)
             e.alert()
+        finally:
+            self.profiles = imported_profiles + self.profiles
+
+            self._update_profile_numbers()
+            return imported_profiles
+
 
     @timer
     def read_file_st(self, filename):