When you permanently lose a level, for example via Raise Dead, can you choose which level is lost? For example, if a Wizard 3/Fighter 2 loses a level, can she choose to lose a level of fighter? If not, which class is the level lost from? The highest levelled class? The last levelled class? A randomly chosen class?
Furthermore, which level of that class is lost-- this matters because the rules for level loss specifically state:
Likewise, the character loses any ability score gain, skill ranks, and any feat associated with the level (if applicable)
While ability scores and feats are tied to total character level (and so the newest one is probably the one lost), skill ranks and especially what specific skills those ranks were spent on are not, and thus which level is lost (and thus which skills are reduced) may well matter.