Hey there!
If you want the trees to fall over, you can apply a force to the tree to make it fall over, and/or set the tree’s collision to a capsule and that should make it fall over, using a combination of them should be the best approach.
I did some initial testing for replating trees, it’s not a difficult task if you want to do it yourself, just save the removed instances transform in an array and use that information to spawn a new instance.
Reason why I haven’t updated with this feature is it was never planned or announced as a feature and I haven’t found the time to do it.
I don’t own the Survival Inventory, there is a MSGT (Multiplayer Survival Game Template) integration tutorial though 