I am working now already a few days on porting my old project from uvision4 (and old softdevice) to the new uvision5 and new softdevice (SDK12). after some strugle I can now compile my old project in uvision5. I leave everything else unchanged (same softdevice). I can program the new image with nrfStudio and it works. But debugging doesn't work I end up always in disassembly mode. I have a bootloader and softdevice (softdevice 7) in flash the disasembly goes to an adress somewhere at 0x0000600 which is not part of my image because it starts at 0x16000. If I continue in the debugger it startsup normally and is working (or it reset and startup with debugger). Only I cannot break the program. Somewhere I made a mistake setting up the enviroment (I also changed the computer) but I have no clue. Checked the tutorials a few times but cannot find what I am doing wrong. Any help would be appriciated or maybe a tutorial/howto for migration an old project ( 3 years old) to the newest setup ?