diff --git a/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs b/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs
index 6b469f29..34b307ee 100644
--- a/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs
+++ b/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs
@@ -2508,11 +2508,28 @@ namespace VEPROMS.CSLA.Library
 			firstTrans = false;
 			if (!CanDeleteObject())
 				throw new System.Security.SecurityException("User not authorized to remove a Item");
+			// B2016-009 check source and desintation types and display message box if needed
+			// C2022-017 moved the CheckSourceDestinationType call to  btnPasteReplace_Click in StepTabRibbon
+			// B2023-101 Handle Paste Replace when procedure to be replaced has Incoming Transitions, i.e. do a separate try/catch for this case
+			ItemInfo newItemInfo = null;
+			try
+			{
+				newItemInfo = ItemInfo.CopyPasteReplaceItemInfoFetch(copyStartID, itemInfo); //itemInfo.ItemID, itemInfo.MyContent.Type, itemInfo.MyContent.Type);
+				if (newItemInfo == null) return null;
+			}
+			catch (Exception ex1)
+			{
+				if (ex1.Message.Contains("has External Transitions and has no next step")
+						|| ex1.Message.Contains("has External Transitions to Procedure")
+						|| ex1.Message.Contains("has External Transitions to it's children"))
+
+				{
+					FlexibleMessageBox.Show("This procedure has external transition references to it that must be resolved before doing the Paste/Replace.\r\nRight Click on the procedure and select the Incoming Transitions menu option to find these references and resolve them.", "Paste Replace Failed", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
+					return null;
+				}
+			}
 			try
 			{
-				// B2016-009 check source and desintation types and display message box if needed
-				// C2022-017 moved the CheckSourceDestinationType call to  btnPasteReplace_Click in StepTabRibbon
-				ItemInfo newItemInfo = ItemInfo.CopyPasteReplaceItemInfoFetch(copyStartID, itemInfo); //itemInfo.ItemID, itemInfo.MyContent.Type, itemInfo.MyContent.Type);
 				// Delete business objects, including remove from tree
 				ItemInfo.DeleteItemInfoAndChildren(itemInfo.ItemID); // Dispose ItemInfo and Children
 				using (Item item = Get(newItemInfo.ItemID)) ItemInfo.Refresh(item);
diff --git a/PROMS/Volian.Controls.Library/DisplaySearch.cs b/PROMS/Volian.Controls.Library/DisplaySearch.cs
index 9f0d5402..b41df472 100644
--- a/PROMS/Volian.Controls.Library/DisplaySearch.cs
+++ b/PROMS/Volian.Controls.Library/DisplaySearch.cs
@@ -1134,6 +1134,9 @@ namespace Volian.Controls.Library
 		// C2020-033: Before allowing conversion of Incoming Transitions to text, get list of results that the user has permission edit.
 		private List<int> TranCvtCheckPermission(bool all)
 		{
+			// B2023-102 Don't crash on converting incoming transitions to text if there are none (can happen if 2nd pass occurs)
+			if (_SearchResults == null) return null;
+
 			// check if a non-reader can convert transitions to text even if a reader - this is set by an administrator on the top
 			// folder properties dialog
 			bool allowNonAdmin = IncTranCvtPerm();