Datasmith Metadata returned as empty array on Python Import

Metadata information seems to not be available on import. A user has reported that this was working before but I was able to reproduce the issue in //UE4/Release-4.24 cl 11590370

I am currently listing this as not a regression, further testing may reveal this to be untrue.

Update
In order to access metadata from datasmith scenes the following line must be included before attempting to access metadata:

ds_scene_in_memory.translate_scene()

Final script should look something like this:

import unreal
ds_file_on_disk = "C:/Users/alex.berryhill/Desktop/BoxWithMetadata.udatasmith"
ds_scene_in_memory = unreal.DatasmithSceneElement.construct_datasmith_scene_from_file(ds_file_on_disk)
key_name = "myKey"
ds_scene_in_memory.translate_scene()
objects_and_values = ds_scene_in_memory.get_all_objects_and_values_for_key(key_name, unreal.DatasmithMeshActorElement)
objects = objects_and_values[0]
values = objects_and_values[1]
print("Printing objects...")
print(objects)
print("Printing values...")
print(values)
result = ds_scene_in_memory.import_scene("/Game/MyStudioScene")
ds_scene_in_memory.destroy_scene()

1. Create a 3DSMax file with Metadata
   • In 3DSMax select Edit > Object Properties
   • Metadata needs to be formatted as [key name][space]=[space][value]
2. Export the object as a .udatasmith file
3. Create a new project
4. Enable Datasmith Import, and Python Script Editor plugins
5. Restart the project
6. Download and run the attached Python script
   • This can be done by saving the Python script in a "Python" folder in Content or copy and pasting the script into the Output Log
   • Be sure to change ds_file_on_disk to the filepath of the saved .udatasmith asset and change key_name to the keyname that you created in 3DSMax

Result
The Datasmith scene is imported but Metadata is reported as an empty array.

LogPython: Printing objects...
LogPython: []
LogPython: Printing values...
LogPython: []

Expected
Metadata information can be manipulated during import.

[UE-23848] Bug Status

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