It would appear that there are at least two plans of varying levels of investment, including:
1) a complete takeover of Dinand by Indy, with IJA replacing Dinosaur, a minor retheme of the Boneyard, and a new E-Ticket (or 2?) to replace Dinorama (water ride or coaster)
2) Dinorama will be taken over by Indy, and everything else remains
Aside from the fact that Indy is a much better fit at DHS or Magic Kingdom, this concept is another example of what is so frustrating with the modern leadership. Some IP tie-ins are drag and drop; Seven Dwarfs Mine Train is in Fantasyland because it is. There is no attempt to modify the story or setting because the world of the film already fits into the surroundings of the area it sits in. That's not to say that the IP is a retread of its plot; in fact, most of these types of attractions take on an active first person perspective (Star Tours, Mine Train, Tower of Terror).
Others are modified to fit the park they reside in, but the stipulation is that the IP's underlying message must be close enough to the ideals of the park for it to work, or something will feel off. A drag and drop of Avatar would work in DHS, but not in Animal Kingdom, and the current treatment of the franchise works in Animal Kingdom, but would feel out of place in DHS.
When it comes to IP's, drag and drops are generally preferred because the alternative (modification) would mean that there's an original concept that has to be created and then stapled to the IP in order to make it work. In that case, the original concept shouldn't be forced to hold up an IP.
Obviously, Indy COULD be made to work in Animal Kingdom, but it would need to be modified from the Indiana Jones experience that one would typically expect in order to do so. Clearly the creators of Dinosaur thought that Indiana Jones Adventure as it exists wasn't a good fit in Animal Kingdom, or they would have saved some money and plopped down an exact clone where Dinosaur sits now to begin with. Why ruin Animal Kingdom's Tower of Terror, just because the one across the pond is considered by some to be better? This is Guardians of the Tower ALL over again, and I'm not here for it.