I have re-arranged Your reply to a new topic not to interfere the discussion at the other topic.
To my knowledge it should be possible to migrate a 3.1 Starter Kit to a Tamino 4.1 version (fully licensed).
According to current plannings a starter kit for version 4 will be available in this year.
I suppose I can’t download the parts needed to upgrade 3rd Starter Kit to support triggers?
I don’t think that a downloadable upgrade to introduce the Server Extension trigger functionality to Tamino 3.1 will be possible.
However, I would recommend that you contact your local Software AG office to discuss a Tamino 4.1 trial.