Project translation memory not in translator package

I create a project with a project translation memory. To be sure, that the project translation memory I check in the project folder and we can see it here:

Now I want to create a project package for my translator: 

The project translation memory is missing!

In order to get the TM into the translator package, I have to go on pre-translate files. Not here!!! 

I go here …

And click on “Finish”. And now I create the package

There is not logic reason for this behaviour.

The problem is, that this trick does not work with the API. I tried to use

AutomaticTaskTemplateIds.PopulateProjectTranslationMemories

and other methods but I did not find a way to include the TM.

Please help!

R.

Martin