ArtNet DMX not working

I think that this problem requires special attention from developers.

The essence of the problem:
The program does not send ArtNet packets (signal) to control the node (Dmx controller). In songs created earlier.

I checked the possible options:

1.Save the song as an independent element, create a new project and import. - ArtNet doesn’t work
2.Deleting user settings and starting the project - ArtNet does not work.
3. Complete removal of VSTL 3 and installation again, along with components-ArtNet doesn’t work.

The only possible option is to create a new song and manually transfer each element through the track selection and buttons (copy/paste) and this can take many hours

I ask developers to pay attention to this problem!!! @Spork

SPECIAL THANK YOU
@CliveJ

For your responsiveness and help in finding the problem.

PS: please add the ability to select (copy) several or all audio tracks using the CTRL key.