[nickitolas]

If you need to separately convert files yourself, then it is by definition not drop in

[FrustratedMonky]

Didn't really mean 'myself'. But if Pumpkin detects an existing world, and does the conversion to their own format. Then it is drop-in.

Even if they supply a tool, isn't it drop-in.

Otherwise I'd so no software in existence is really drop-in. Most of them have some update that has to happen.