diff --git a/AppData/ComLib.cs b/AppData/ComLib.cs
index dde2d5c..d0ef66f 100644
--- a/AppData/ComLib.cs
+++ b/AppData/ComLib.cs
@@ -2369,6 +2369,11 @@ namespace AppData
             // preparo il contenuto della busta ed invio i messaggi...
             try
             {
+                // preliminare: se è stima EXT --> riporto pezzi su ordine ORIGINALE...
+                if (pType == 3)
+                {
+                    DLMan.taOLT.setBatchSplit(BatchID, false);
+                }
                 // in base allo stato del BATCH corrente determino il tempo e le opzioni da inviare...
                 var batch = DLMan.taBL.getByKey(BatchID);
                 int mTime = 1;
diff --git a/NKC_SDK/Objects.cs b/NKC_SDK/Objects.cs
index 672fd0f..1000fa9 100644
--- a/NKC_SDK/Objects.cs
+++ b/NKC_SDK/Objects.cs
@@ -110,6 +110,7 @@ namespace NKC_SDK
         /// Tipo di processing richiesto
         /// 1 = stima
         /// 2 = nesting
+        /// 3 = stima extended
         /// </summary>
         public int ProcType { get; set; }
 
diff --git a/NKC_WF/Controllers/BatchProcController.cs b/NKC_WF/Controllers/BatchProcController.cs
index 01074d6..502e011 100644
--- a/NKC_WF/Controllers/BatchProcController.cs
+++ b/NKC_WF/Controllers/BatchProcController.cs
@@ -495,11 +495,21 @@ namespace NKC_WF.Controllers
                                     DLMan.taBL.resetTree(rispNest.BatchID);
                                     // SALVO info riguardo al batch completato
                                     DLMan.taBL.updateStatus(rispNest.BatchID, bStatus, rispNest.EnvNum, (decimal)rispNest.EstimatedWorktime / 60);
+
                                     // salvo info riguardo ai vari Bunk / Sheets / Items...
-                                    ComLib.updateBunksFromNesting(rispNest.BatchID, rispNest.BunkList);
+                                    if (rispNest.BunkList != null && rispNest.BunkList.Count > 0)
+                                    {
+                                        ComLib.updateBunksFromNesting(rispNest.BatchID, rispNest.BunkList);
+                                    }
                                     // salvo info x CART & BINS previsti
-                                    ComLib.updateBinsFromNesting(rispNest.BatchID, rispNest.BinList);
-                                    ComLib.updateCartsFromNesting(rispNest.BatchID, rispNest.CartList);
+                                    if (rispNest.BinList != null && rispNest.BinList.Count > 0)
+                                    {
+                                        ComLib.updateBinsFromNesting(rispNest.BatchID, rispNest.BinList);
+                                    }
+                                    if (rispNest.CartList != null && rispNest.CartList.Count > 0)
+                                    {
+                                        ComLib.updateCartsFromNesting(rispNest.BatchID, rispNest.CartList);
+                                    }
 
                                     isSplitReq = ComLib.checkSendBatchSplit(rispNest.BatchID);
                                 }
diff --git a/NKC_WF/WebUserControls/cmp_batchDetail.ascx.cs b/NKC_WF/WebUserControls/cmp_batchDetail.ascx.cs
index 271239f..a323da7 100644
--- a/NKC_WF/WebUserControls/cmp_batchDetail.ascx.cs
+++ b/NKC_WF/WebUserControls/cmp_batchDetail.ascx.cs
@@ -104,7 +104,7 @@ namespace NKC_WF.WebUserControls
         {
             // ri-assegnazione ordini/kit a batch ancestor
             DLMan.taOLT.setBatchSplit(BatchId, false);
-            // registro accettazione Nesting
+            // registro reset Nesting
             DLMan.taBL.refuseNesting(BatchId, DLMan.CodSoggCurrUser);
             raiseEvent();
         }
@@ -115,11 +115,38 @@ namespace NKC_WF.WebUserControls
             ComLib.sendMaterials();
             ComLib.sendBatchReq(BatchId, "Estimation", 3, false, 0);
 
+
+            // ri-assegnazione ordini/kit a batch ancestor
+            if (BatchIsAncestor)
+            {
+                DLMan.taOLT.setBatchSplit(BatchId, false);
+                // registro reset Nesting
+                DLMan.taBL.refuseNesting(BatchId, DLMan.CodSoggCurrUser);
+                // resetto i batch child a 0 se presenti
+                resetChildBatch();
+                // elimino gli orderExtTree
+                DLMan.taOLT.deleteByBatch(BatchId);
+            }
+
             // registro su DB nesting iniziato...
             DLMan.taBL.updateStatus(BatchId, (int)BatchStatus.EstimationRequested, "", 0);
             raiseEvent();
         }
 
+        private void resetChildBatch()
+        {
+            var tabDesc = ComLib.BatchDescendant(BatchId);
+            if (tabDesc != null && tabDesc.Count > 0)
+            {
+                foreach (var item in tabDesc)
+                {
+                    DLMan.taBL.updateStatus(item.BatchID, (int)BatchStatus.Imported, "", -1);
+                    // elimino order tree eventuale...
+                    DLMan.taOLT.deleteByBatch(item.BatchID);
+                }
+            }
+        }
+
         protected void lbtSendNesting_Click(object sender, EventArgs e)
         {
             // invia a redis a a richiesta...
@@ -150,14 +177,7 @@ namespace NKC_WF.WebUserControls
             DLMan.taBL.updateStatus(BatchId, (int)BatchStatus.Imported, "", -1);
             if (BatchIsAncestor)
             {
-                var tabDesc = ComLib.BatchDescendant(BatchId);
-                if (tabDesc != null && tabDesc.Count > 0)
-                {
-                    foreach (var item in tabDesc)
-                    {
-                        DLMan.taBL.updateStatus(item.BatchID, (int)BatchStatus.Imported, "", -1);
-                    }
-                }
+                resetChildBatch();
             }
             raiseEvent();
         }