HLOD render distance issue

I have an issue generating HLODs. I’m using merged mesh layer for my tiled landscape. When the HLODs generate they look fine at first. In that it is the shape and look of my landscape.

The issue is that the HLODs generated will become not visible around my landscape tile when I load it in. But I need them to remain visible to the edge of the landscape tile.

Does anyone know how to fix this issue?