Principles of transportation of artifacts from expedition were changed.
Now, the removal of artifacts from another planet is possible only with the help of the units, which have the ability to carry them.
You couldn’t remove an artifact by any unit from the expedition too.  If you have the situation with its acquisition, you will receive a message with explanation.

The artifacts couldn’t locate in the fleet, which have not any special unit.  If this happens, they immediately destroyed (eg.  after sending of part of the fleet from coordinates, or after the fight).
Just recently we fixed an issue where the presence of an artifact in the fleet caused a draw in a fight, and now this will not happen.

The change is aimed at unification of transportation of artifacts.
List of units, which can carry artifacts: Juggernaut, Gigalord, Carrier and Investigator.

does this mean to find them in Babylon sector expedition we need to send carrier or investigator? (for toss)