Hello,
When you have one base (base A) with Alien Containment Facility and another base (base B) without, all the corpse of aliens after missions are sent to "base A". Even if there is a team from "base B" which execute mission.
If you start to build Alien Containment Facility in "base B", corpse of aliens from B team's missions are lost because of Alien Containment Facility not finished.
When you capture living aliens with a team from base without Alien Containment Facility, it's not possible to send them to another base. So you are obliged to build an Alien Containment Facility in all your bases. And, as transfert doesn't work, it is not possible to send living aliens in a base with research laboratory and so you are obliged to build laboratories in all the bases.