Oh! Yeah, that's a bit of a difference....
The interrupt vectors are as far as I know something defined in the hardware of the chip itself. Location 0x0008h is the high priority interrupt vector and 0x0018h is the low priority interrupt vector. I don't see any way to change that.

Are both your bootloader AND the application using DT-INTS? I have no idea how that should/would/could work....

/Henrik.