I watched your video and understand what is going on - Gaia is behaving as designed. You stamp using a texture mask - and get a certain result. Then you change the texture mask (you painted it out), and got a different result. Because the stamper has different inputs, it gets different outputs. I understand what you are trying to achieve - but while Gaia serializes the state of the stamper - it does not serialize the state of the texture splats that are affecting it in your use case, so it will never do what you are trying to do. An alternative would be to export the mask as a texture and use that instead. I think this is a nice idea, and with Gaia 2 inherently being multi tile in nature, I will make sure that dependent objects are matched with the terrain.