Quote Originally Posted by noob View Post
2e and 1e are not so far from 3e and 5e in terms of classes but multiclassing worked very differently(there was dual classing and some other form of multiclassing and classes and multiclassings allowed depends on the race) so if 3e/5e characters were multiclassed it could make the conversion to earlier editions painfully complex to do.(and it is odd to see your dwarf something suddenly lose a bunch of levels "because they were above the class level cap for a dwarf" but that is kind of excepted when changing editions)
Yes, I'm well aware of how AD&D multiclassing and dual-classing work. I did all the conversions to preserve capabilities as closely as possible, not just looking at levels and going "Welp, he's a Dwarf Fighter 5 in 3e so he gets what a Dwarf Fighter 5 gets in AD&D." Certainly there's no way to figure out arbitrary conversions between AD&D and 3e, but converting individual characters is quite easy if you know both editions, especially if you're going between 2e and 3e and are willing to dip into Player's Options stuff.

And for converting a 4e caster to any other edition you need to do a lot of complicated stuff.(because spells works massively differently between this edition and the others)
You can't time travel between 3e and 4e, as 4e is obviously an alternate Mirror Universe timeline where all the PCs' equivalents wear goatees, and said timeline is rightfully stricken from existence by the end of the adventure.