diff --git a/Gems/Atom/RPI/Code/Source/RPI.Builders/Model/MorphTargetExporter.cpp b/Gems/Atom/RPI/Code/Source/RPI.Builders/Model/MorphTargetExporter.cpp
index 0a1fb49ab5..fa437c002f 100644
--- a/Gems/Atom/RPI/Code/Source/RPI.Builders/Model/MorphTargetExporter.cpp
+++ b/Gems/Atom/RPI/Code/Source/RPI.Builders/Model/MorphTargetExporter.cpp
@@ -159,9 +159,14 @@ namespace AZ::RPI
 
         // Determine the vertex index range for the morph target.
         const uint32_t numVertices = blendShapeData->GetVertexCount();
-        AZ_Assert(blendShapeData->GetVertexCount() == sourceMesh.m_meshData->GetVertexCount(),
-            "Blend shape (%s) contains more/less vertices (%d) than the neutral mesh (%d).",
-            blendShapeName.c_str(), numVertices, sourceMesh.m_meshData->GetVertexCount());
+        if (blendShapeData->GetVertexCount() != sourceMesh.m_meshData->GetVertexCount())
+        {
+            AZ_Error(ModelAssetBuilderComponent::s_builderName, false,
+                "Skipping blend shape (%s) as it contains more/less vertices (%d) than the neutral mesh (%d). "
+                "The blend shape is most likely influencing multiple meshes, which is currently not supported.",
+                blendShapeName.c_str(), numVertices, sourceMesh.m_meshData->GetVertexCount());
+            return;
+        }
 
         // The start index is after any previously added deltas
         metaData.m_startIndex = aznumeric_cast<uint32_t>(packedCompressedMorphTargetVertexData.size());
diff --git a/Gems/SceneProcessing/Code/Source/Generation/Components/MeshOptimizer/MeshOptimizerComponent.cpp b/Gems/SceneProcessing/Code/Source/Generation/Components/MeshOptimizer/MeshOptimizerComponent.cpp
index 7541e2fce7..a410c4e6c9 100644
--- a/Gems/SceneProcessing/Code/Source/Generation/Components/MeshOptimizer/MeshOptimizerComponent.cpp
+++ b/Gems/SceneProcessing/Code/Source/Generation/Components/MeshOptimizer/MeshOptimizerComponent.cpp
@@ -379,10 +379,12 @@ namespace AZ::SceneGenerationComponents
 
                 auto [optimizedMesh, optimizedUVs, optimizedTangents, optimizedBitangents, optimizedVertexColors, optimizedSkinWeights] = OptimizeMesh(mesh, mesh, uvDatas, tangentDatas, bitangentDatas, colorDatas, skinWeightDatas, meshGroup, hasBlendShapes);
 
-                AZ_TracePrintf(AZ::SceneAPI::Utilities::LogWindow, "Base mesh: %zu vertices, optimized mesh: %zu vertices, %0.02f%% of the original",
+                AZ_TracePrintf(AZ::SceneAPI::Utilities::LogWindow, "Optimized mesh '%s': Original: %zu vertices -> optimized: %zu vertices, %0.02f%% of the original (hasBlendShapes=%s)",
+                    graph.GetNodeName(nodeIndex).GetName(),
                     mesh->GetUsedControlPointCount(),
                     optimizedMesh->GetUsedControlPointCount(),
-                    ((float)optimizedMesh->GetUsedControlPointCount() / (float)mesh->GetUsedControlPointCount()) * 100.0f
+                    ((float)optimizedMesh->GetUsedControlPointCount() / (float)mesh->GetUsedControlPointCount()) * 100.0f,
+                    hasBlendShapes ? "Yes" : "No"
                 );
 
                 const NodeIndex optimizedMeshNodeIndex = graph.AddChild(graph.GetNodeParent(nodeIndex), name.c_str(), AZStd::move(optimizedMesh));