Same string ID used two times ?

[TulipVorlax]

While updating Wings 3D french translation (at last), i've stumbled on this in the file [...]\wings3d_1.5.2_x64\lib\wings-1.5.2\ebin\wings_en.lang

Code:

{wings_shape,
[
  {create_folder,
   [
    {1,"A folder by that name already exists"}
   ]},
  {create_folder_dialog,
   [
    {1,"Choose Folder Name"},
    {2,"Create Folder"}
   ]},
  {do_menu,
   [
    {1,"Duplicate"},
    {2,"Duplicate selected objects"},
    {3,"Delete"},
    {4,"Delete selected objects"},
    {5,"Rename"},
    {6,"Rename selected objects"},
    {7,"Create Folder"},
    {8,"Rename Folder"},
    {9,"Delete Folder"},
    {10,"Delete folder and its contents"},
    {11,"Move to Folder"},
    {12,"Move selected objects to this folder"},
    {13,"Empty Folder"},
    {14,"Remove From Folder"},
    {14,"Rename all selected objects"},
    {15,"Remove Selected From Folders"},
    {15,"Rename objects using Search and Replace"}
   ]},

That last line is using the same ID as the previous one. Is it intentional ? Thanks.

Edit : Oh ! I missed that ID 14 is also used two times. So both 14 and 15 appear twice.