Hello,
All objects that have only a animation of fall, for example tree or wall, you can run over to make it fall, and you can make setdamage 0 to "restore" him, but all JIP players doesn't see the change when it goes from falling to normal state.
All JIP players see only the wall/tree damaged.
_terrainobj = (nearestTerrainObjects [player, [], 10, false] select {damage _x >= 1}) select 0;
_terrainobj setDamage 0;to make the tree/wall "restored"
This working fine when setting damage with "setdamage 1" on the tree or the wall. That's why it's really important to ride on with a vehicle or make a explosion near the tree/wall