Missing some parameters in items array in sgtm

i am sending my ecommerce items array to sgtm. In datalayer there are beside quantity, item_brand and so on the following parameters in the items array:
id (not item_id)

In the log in sgtm i can see that google_business_vertical and action_source are there, but the others are missing (but the values are definitly there)

When i add the parameters to the normal event parameter but not the items array it works.

It seems like some parameters are deleted in ecommerce.items array?

When using data tag it is working …

Sounds strange, can you share screenshots where you can see that you are sending one format of items array, but on the server in event data in the same request you have a different one?