To chime in on this (And with proper credit to those outside of here), Clive on the IU forums seemed to point out that the Falls Lake project warranting the move of the Log Cabin set to be now behind the War of The Worlds sets [Where the old Lost World/JP3 sets were], the project being at Falls Lake is a new transportation lot (as the Barham Gate project includes the old Transportation lot).
https://forums.insideuniversal.net/threads/this-just-in.11334/post-911965.
I do think that with elements such as that of the removal of the former Soundstages 28, 21-25; and with the addition of soundstages next to the Production Bungalows and replacing the old Red Sea; that we may be inbound for changes of what Barham Gate's project was. Especially with the Creative Campus built right next to the NBCUniversal Building 1440.
It has been nearly a decade since the revised Evolution Plan did get shown off after-all; wouldn't be surprising if the plans evolved as the studio and park did.