Mesh Terrain Partitions don't load in PIE

I made simple level with WP + Water Plugin + Mesh Terrain with Modifiers.
And Base level with Trigger that Opens first level.

Build Mesh Partition - check;
Compiled sections in Outliner - check;
Runtime transformer pipeline ready (actually i’ve copied default one) - check

Crash on "Open Level (by Object Reference) "
or
Mesh Terrain not loading on “Load Level Instance (by Object Reference)”

Environment: Win10, UE 5.8.1 BP only Tutorial project + third person template

Is this linked? UE5.8 Mesh Partition not loading in when using level change (name or object)

Crash message:

Assertion failed: ModifierGroup.BaseDescs()[BaseModifierIndex].ModifierPath == BuildInfo.BaseModifierPaths[BaseModifierIndex] [File:D:\build\++UE5\Sync\Engine\Plugins\Experimental\MeshPartition\Source\MeshPartitionEditor\Private\MeshPartitionWorldUpdater.cpp] [Line: 261]