UE5 World Partition can not delete landscape

Development World Creation
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40

I wanted to confirm if people are having the same issue I have importing a heightmap over the open world default landscape layer?

UE_5_1_Nevada_AFB_Landscape_Layer_Bug
UE_5_1_Nevada_AFB_Landscape_Layer_Bug2465×1188 141 KB

UE 4.27 importing the same heightmap.

UE_4_27_Nevada_AFB_Heightmap
UE_4_27_Nevada_AFB_Heightmap1910×989 200 KB