If an Anaconda triggers its Escape System whilst a member of a Fireteam, does the Operator join the Fireteam? The Rules Annex states: But Escape System does not use the term Dismount. There's also other threads that point out that an Operator is distinct in the game from a Pilot (https://forum.corvusbelli.com/threa...purposes-of-victory-points.39205/#post-390711)... But then you have the Escape System text that repeatedly refers to Pilots.
The operator is an alternate profile of the same trooper rather than a separate unit, so it would remain in the Fireteam just like a trooper with Transmutation IMO.