So far, we've successfully migrated/converted all NPCs/spawns/grids/factions/loottables so that the server now has the 150+ zones populated that we had in 4.4. This includes merchants, bankers and guild master NPCs. SQL updates easily changed them to the new class numbers. All NPCs have the loot they had in the earlier version.
We have doors done - they had to be changed by hand. All teleport doors should work (PoK, frozenshadow, etc).
We've also gotten the accounts table over, but not the character table, yet. Saving that for tomorrow
If the program I wrote works, we should have the characters converted then.
Unique items will have to be manually entered. Dindoleki aka Tark is doing that.
The only other big thing I see are the quests. We have a lot of them and have decided to switch to perl, so some major conversion will be involved. I still see us up this weekend if all goes smoothly.