FOSS gamedev and creative worlds

When you remove a mod or youre tweaking youre own, how do you get rid of leftover undefined nodes from your world?

I think you need to use WorldEdit or do the /clearobjects command if you're the admin of the server. but I warn you clearobjects will destroy your world which means you have to restart it.

I think this should be moved to Bugs and Problems.

LolManKuba wrote:... but I warn you clearobjects will destroy your world which means you have to restart it.

How so? Last I checked all it does is clear objects (except it didn't clear unknown blocks)

A simple /remove_undefined command would be super :-)

otherwise i hesitate to try other ore and nature (abm dependent) mods for fear that ill be stuck with a million undefined nodes undeground and on the ground :S

ok, this is going to take some time to do. First, make sure WorldEdit is installed, and you have privs. Then type these in order:
/teleport 30000,30000,30000
//pos1
/teleport -30000,-30000,-30000
//pos2
/teleport 0,0,0
//replace unknown air

be prepared to wait a few hours for it to work though