Let's suppose my character dies and I roll a new one or raise dead is cast on him. The rules say I lose a level by doing so.
Now, in my group we had lots of discussions on how it's done. We used to start at the beginning of the previous level. Even if we chose halfway from one level to the next, that was dissatisfying for there were moments where death was cheaper (right after leveling up). We tried losing XP equal to 1000 times the preious level (the same amount that was needed to level up) and sure, there were spikes (to die in the last 1000 xp of a level was better than to die when you just leveled up) but they were minor and we used that system quite a lot.
What's the One True Way according to RAW?