What can the terrain tools problem be?

Sorry for the cross post, but people don't always see the technical thread.

We had a strange problem occur last night. In perhaps 20x 20 section of parceled estate land the "raise" terrain tool would always LOWER the terrain. "Revert" lowered it even more way below the water level. The other tools did nothing. However in the terrain surrounding this plot, and in the same parcel, the tools worked normally.

Has anyone heard of this before? Two of us tried it with the same results. Also the previous day, all was working fine in the same area.

We didn't intend to have a deep lake in the middle of this land, so I hope someone has the answer.

Yeah, the terrain's 'bake' level is set to something extreme, such that touching the terrain with edit tools will slam the touched terrain back to the extreme 'reverted' position.

Get the region owner to rebake the sim terrain just as it is now. Your troubles should go away then.

If it worked ok recently then my guess is what might have changed between then and now is the terrain edit limits have been reduced. Adding onto what Desmond is saying about the 'baked' terrain, if it were baked at, for instance, z=0 but the terrain edit limits were +/- 100m then you'd have no problem. But if the terrain edit limits were then changed to +/- 4m then every time you attempt to edit the terrain, no matter what you do, the land is going to try to sink till it gets within +/- 4 meters of the baked level.

So either rebaking the terrain to it's current limits, or increasing the terrain edit limits, will solve the current problem.

-Atashi