Terrain Material Search & Replace is bigger than you think.
Ok, let’s start!
What is with the near constant updates? Finally attention to terrain!
This is going to be so damn useful as a terrain developer. I’ve always had to use Eventive’s revamped terrain converter, but no longer!
Link:
https://www.roblox.com/library/2627185881/Terrain-Converter
Finally, one of the most useful plugins for anyone dealing with terrain has finally been fully implemented into Roblox itself. Their plugin was honestly kind of clunky and hard to use, not to discredit their creation.
But seriously, thank you so much!
I literally cannot stress how important this is. If you’ve ever used terrain before, you know how useful this will be.
Changing seasons? Done in literally under a minute! No need to worry about having to use brushes to individually paint the terrain, or use the plugin to, still, do this manually.
I’ve searched Youtube tutorials for this for a very long time. If I accidentally used one terrain material it was a pain to switch it over.
Thank goodness!
EDIT: I. Literally. Cannot. Stress. How. Important. This. Is!
This post will have examples on how to use this in your day-to-day terrain creation.
First Topic: This is not Add or Grow! @TheCarbyneUniverse
Here is a picture of me adding water. You can see that it cuts through brick.
Here is me converting air to water. You can clearly see that this is not the same. This time, the water does not cut into the brick.
Look me straight in the face and tell me that’s the same thing. Try me.
Hasta la vista to Sea Level, baby!
What’s that? I can just do air > water?
Indeed, indeed my dudes! Simply amazing. Great for precision.
This is what I’m talking about! I had this issue literally yesterday, and now it’s been quelled. Fast an easy for precise water, or really anything.
Second Topic: Thank goodness for a large selection box!
The plugin by Eventive was useful because of brushes, but it’s region box wasn’t functional. Today, though, that changes!
No longer will I have to use Part to Terrain to quickly make large areas. No longer will I have to use sea level and meticulously paint over it to get the desired size.
https://www.roblox.com/library/261634767/Part-to-Terrain
In fact, the canyon you above was made with part to terrain. Not any longer! Through the use of turning air to a certain material I can create large areas in a jiffy!
16384 x 16384 x 16384 is how big the box above is, and trust me, it’s huge.
Third Topic: Oops, I made a mistake!
You’re finished making your map when you realize: All the sand is supposed to be limestone!
Will you, one by one, paint over the sand and hope you follow the general outline, or,
Two, just use this amazing plugin!
Choice one: Use box.
Choice two: Choose brushes.
More freaking amazing things: Either 1 or 2 can be turned to limestone. How cool! One at a time, or everything!
More Positives:
Unlike the “Region” Tool, you actually save where the box was! Yay!
Slight Negative 
The only annoying thing is that the handles are just like sea level; way too huge. Not good for precise terrain. Okay, we can use brushes, but the point still stands.
Other than that, though, so useful.
Bonus: I made the terrain in the images above- 
