diff --git a/src/PIM/Conversion/ONNXToSpatial/ONNXToSpatialPass.cpp b/src/PIM/Conversion/ONNXToSpatial/ONNXToSpatialPass.cpp
index b503837..f6e56c6 100644
--- a/src/PIM/Conversion/ONNXToSpatial/ONNXToSpatialPass.cpp
+++ b/src/PIM/Conversion/ONNXToSpatial/ONNXToSpatialPass.cpp
@@ -239,8 +239,9 @@ void ONNXToSpatialPass::mergeTriviallyConnectedComputes(func::FuncOp funcOp) {
 
   for (auto compute : funcOp.getOps<spatial::SpatWeightedCompute>())
     if (compute->hasOneUse()) {
-      auto user = *compute->getUsers().begin();
-      if (llvm::isa<spatial::SpatWeightedCompute>(user) && user->getNumOperands() == 1)
+      auto user = dyn_cast<spatial::SpatWeightedCompute>(*compute->getUsers().begin());
+
+      if (user && user.getInputs().size() == 1)
         trivialComputes.push_back(compute);
     }
 
@@ -255,19 +256,48 @@ void ONNXToSpatialPass::mergeTriviallyConnectedComputes(func::FuncOp funcOp) {
     auto child = cast<spatial::SpatWeightedCompute>(*compute->getUsers().begin());
 
     rewriter.setInsertionPointAfter(compute.getOperation());
+
     auto newCompute =
       spatial::SpatWeightedCompute::create(rewriter, loc, child.getResultTypes(), compute.getOperands());
     newCompute.getProperties().setOperandSegmentSizes(
       {static_cast<int>(compute.getWeights().size()), static_cast<int>(compute.getInputs().size())});
 
     IRMapping mapper;
+    auto weightMutableIter = newCompute.getWeightsMutable();
+    for (auto weight : child.getWeights()) {
+      auto founded = llvm::find(newCompute.getWeights(), weight);
+      if (founded == newCompute.getWeights().end()) {
+        weightMutableIter.append(weight);
+        auto last = weightMutableIter.end();
+        last = std::prev(last, 1);
+        mapper.map(weight, last->get());
+      }
+      else {
+        mapper.map(weight, *founded);
+      }
+    }
+
     compute.getBodyRegion().cloneInto(&newCompute.getBodyRegion(), mapper);
     auto newTerminator = newCompute.getBody().front().getTerminator();
     mapper.map(*child.getBody().front().getArguments().begin(), newTerminator->getOperand(0));
     newTerminator->erase();
     rewriter.setInsertionPoint(&newCompute.getBody().front(), newCompute.getBody().front().end());
-    for (auto& op : child.getBody().front())
-      rewriter.clone(op, mapper);
+    for (auto& op : child.getBody().front()) {
+      auto newInst = rewriter.clone(op, mapper);
+
+      if (auto vmOp = llvm::dyn_cast<spatial::SpatWeightedMVMOp>(newInst)) {
+        auto oldIndex = vmOp.getWeightIndex();
+        auto newWeight = mapper.lookup(*std::next(child.getWeights().begin(), oldIndex));
+        auto newIndex = std::distance(newCompute.getWeights().begin(), llvm::find(newCompute.getWeights(), newWeight));
+        vmOp.setWeightIndex(newIndex);
+      }
+      if (auto vmOp = llvm::dyn_cast<spatial::SpatWeightedVMMOp>(newInst)) {
+        auto oldIndex = vmOp.getWeightIndex();
+        auto newWeight = mapper.lookup(*std::next(child.getWeights().begin(), oldIndex));
+        auto newIndex = std::distance(newCompute.getWeights().begin(), llvm::find(newCompute.getWeights(), newWeight));
+        vmOp.setWeightIndex(newIndex);
+      }
+    }
 
     child.replaceAllUsesWith(newCompute);
     toErase.insert(child);
@@ -277,8 +307,8 @@ void ONNXToSpatialPass::mergeTriviallyConnectedComputes(func::FuncOp funcOp) {
     toErase.insert(compute);
 
     if (newCompute->hasOneUse()) {
-      auto user = *newCompute->getUsers().begin();
-      if (llvm::isa<spatial::SpatWeightedCompute>(user) && user->getNumOperands() == 1)
+      auto user = dyn_cast<spatial::SpatWeightedCompute>(*newCompute->getUsers().begin());
+      if (user && user.getInputs().size() == 1)
         trivialComputes.push_back(newCompute);
     }
   }
diff --git a/src/PIM/Dialect/Spatial/Transforms/MergeComputeNodes/MergeComputeNodesPass.cpp b/src/PIM/Dialect/Spatial/Transforms/MergeComputeNodes/MergeComputeNodesPass.cpp
index 83dce8a..075e498 100644
--- a/src/PIM/Dialect/Spatial/Transforms/MergeComputeNodes/MergeComputeNodesPass.cpp
+++ b/src/PIM/Dialect/Spatial/Transforms/MergeComputeNodes/MergeComputeNodesPass.cpp
@@ -219,7 +219,6 @@ private:
 
     auto weightMutableIter = toCompute.getWeightsMutable();
     for (auto weight : fromCompute.getWeights()) {
-      // TODO non clonare weight gia' presenti e poi vanno rimappate le nuove OP con i nuovi weight
       auto founded = llvm::find(toCompute.getWeights(), weight);
       if (founded == toCompute.getWeights().end()) {
         size_t sizeW = toCompute.getWeights().size();