Basically, in my landscape carried over from 4.25, I have a pre-made island and would like to use an ocean, lakes, and rivers with it. For the ocean, I am able to get water to appear around the natural shape of the island by putting the WaterBodyOcean spline inside of the landscape and setting blend mode to Max instead of Alpha Blend. This allows the Ocean to form around the landscape without deforming it at all.
However, when I add a WaterBodyRiver or a WaterBodyLake, the ocean all of a sudden does restrict the size of the landscape so that it only keeps the pre-existing height data inside of the WaterBodyOcean spline, with the rest of the landscape being turned into a generally flat plane.
Is there a way to add the lake or rive so that they can modify my landscape without forcing it inside of the WaterBodyOcean spline? Thank you for the help.