Just Tested this using Manual Saves, with 3 different Dinosaurs so far (they are the only ones that have died in dino fights so far in testing)
I waited until all 3 dead dinosaurs were in the air before saving, I then Saved the game Manually, Quit the game to desktop, Then reloaded the Manual Save
Upon loading the game, The Helicopters carrying the Ankylosaurs, and Ceratosaurs continued to remove the Dead Dinosaurs like normal. (These were not fully engaged with the helicopter yet, so the helicopter was not transporting them away, which is why they did not break during initial testing, after further testing they break like all other tested dinosaurs so far)
The Helicopter Carrying the Dead Gallimimus fell out of the sky as soon as the game loaded, Confirming that so far, Gallimimus will break the Status of a Transport Helicopter when the game saves (I have heard Raptors, Compys, and natsuceratops break their helicopters too but I have not tested them yet)
There are plenty of more Dinosaurs to test this with and see if Only Gallimimus (and potentially others) break their helicopters, or if there is another type of Dinosaur that will break the game as well that hasn't been posted or talked about
I'll probably see about doing a sandbox world so I can pump out all the dinosaur types as fast as possible to do testing with, but realistically, I don't expect anything to be done about it since it's been a year and Devs still haven't managed to solve it, and I'm sure they are past the point of caring since the best response we got after a Year is: Oops, Try again. Instead of taking the time to figure out why this is happening and fix it for any affected Dinosaurs
Pictures
Edit: I have also tested dead Raptors and dead Struthiomimus and have confirmed that both break transport helicopters on reload like Gallimimus, Imgur Link is being updated as I discover more broken dinosaurs, I am using Sandbox mode so I can have unlimited funds to do the testing quicker
Edit 2: Broken Dinosaur List (updated as I go here (I have abandoned Imgur since I was streaming the test at the time of this edit and started over from the beginning, Video evidence is easier to do than screenshotting every single dinosaur in the game)):
Acrocanthosarus, Albertosaurus, Allosaurus, Amargasaurus, Anklosaurus, Apatosaurus, Archaeornithomimus, Baryonyx, Brachiosaurus, Camarasaurus, Carcharodontosaurus, Carnotaurus, Certaosaurus, Chasmosaurus, Chungkingosaurus, Coelophysis, Compsognathus, Corythosaurus, Crichtonsaurus, Gallimimus, Struthiomimus, Trex, Raptor
Working Dinosaur List (Updated as I go):
None (Retested the previous 2 that had passed, I have come to the conclusion that I saved the game too early before the helicopter had fully reeled in the dinosaur/started flying away, At this point I fully Expect every dead dinosaur to exhibit this behavior, In order to replicate this bug, The transport Helicopter must be flying away from where it picked up the dinosaur, then save and reload the game, it cannot still be reeling in the dinosaur or the bug wont activate and the helicopter will function normally and not crash out of the sky)
Edit 3: Getting off for the night, I have tested 23 dinosaurs so far, All have broken their transport that was flying them away, when the game is saved in route and then reloaded (Example, the Game autosaved while you were moving a dinosaur, and the game crashed before your next autosave making you have to load your "bugged" autosave, This was simulated on Stream by saving with Helicopters flying away and then reloading, Not sure if linking it is allowed so I'll just say Twitch name is same name on here, also I didn't realize my mic was muted the first ~30min so that can be skipped, its just me building the testing layout.)