Bug... Although it involves somebody else's mod but still might be worth looking at.

There appears to be a conflict with some of the KI5 trunks and your mod. Reproducible with the Hillbilly's main trunk (the flatbed, not the side storage box that works), the Toyota roof rack (not it's trunk but accessible from the back with the trunk), and the LandRover's spare-tire compartment(once again accessible from the back with the trunk). So their "second trunks" are not showing up.

I'm not sure if this was always true or just from the last update. I'm confident it wasn't something changing on KI5s side as the Toyota and LandRovers haven't been updated in awhile.

That said, I know it's somebody else's mod not working with yours but it might be reflective of how others handle multiple trunks. I haven't tried it with any other vehicles with multiple trunks, like the Autostar ones. But I have reproduced this with a clean new game with only this mod and one of the KI5 vehicles running. Such as the Toyota or Hillbilly. As well as Bikinitools to spawn them but whatever.

I'm sorry for bringing this up if this is something you don't want to deal with as it involves somebody else's mod but just thought you should know regardless.

That being said... Thank you for making this mod and I hope you continue work here as well as mod making in general.