diff --git a/PROMS/VEPROMS.CSLA.Library/Extension/DisplayText.cs b/PROMS/VEPROMS.CSLA.Library/Extension/DisplayText.cs
index 04e71963..66e49ec0 100644
--- a/PROMS/VEPROMS.CSLA.Library/Extension/DisplayText.cs
+++ b/PROMS/VEPROMS.CSLA.Library/Extension/DisplayText.cs
@@ -1012,13 +1012,18 @@ namespace VEPROMS.CSLA.Library
 										(tran.MyContent.ContentItems[0].ActiveFormat.PlantFormat.FormatData.TransData.TransTypeList[tran.TranType].TransMenu.Contains("Proc") ||
 										tran.MyContent.ContentItems[0].ActiveFormat.PlantFormat.FormatData.TransData.TransTypeList[tran.TranType].TransMenu.Contains("other proc"))) 
 									{
-										string destProcNumber = tran.MyItemToID.MyProcedure.DisplayNumber;
-										foreach (ProcedureInfo prci in tran.MyContent.ContentItems[0].MyDocVersion.Procedures)
+										// B2022-148: cannot insert outside transition in a background document that references a related EOP – transition is converted to text
+										bool dvsLinked = DocVersionInfo.Linked(tran.MyItemToID.MyDocVersion, tran.MyContent.ContentItems[0].MyDocVersion);
+										if (!dvsLinked)
 										{
-											if (prci.DisplayNumber == destProcNumber)
+											string destProcNumber = tran.MyItemToID.MyProcedure.DisplayNumber;
+											foreach (ProcedureInfo prci in tran.MyContent.ContentItems[0].MyDocVersion.Procedures)
 											{
-												forceConvertToText = true;
-												break;
+												if (prci.DisplayNumber == destProcNumber)
+												{
+													forceConvertToText = true;
+													break;
+												}
 											}
 										}
 
diff --git a/PROMS/VEPROMS.CSLA.Library/Extension/DocVersionExt.cs b/PROMS/VEPROMS.CSLA.Library/Extension/DocVersionExt.cs
index 9359df15..a937bde9 100644
--- a/PROMS/VEPROMS.CSLA.Library/Extension/DocVersionExt.cs
+++ b/PROMS/VEPROMS.CSLA.Library/Extension/DocVersionExt.cs
@@ -317,7 +317,41 @@ namespace VEPROMS.CSLA.Library
 			AssociationConfig ac = new AssociationConfig(associationInfo);
 			return ac.ROUpdate_LoadingFigures;
 		}
-
+		#region Enhanced
+		// B2022-148: cannot insert outside transition in a background document that references a related EOP – transition is converted to text
+		//	Check if the 2 doc versions are linked, i.e. one is source and the other is enhanced linked to the source
+		public static bool Linked(DocVersionInfo dv1, DocVersionInfo dv2)
+		{
+			DocVersionConfig dvc1 = dv1.DocVersionConfig;
+			DocVersionConfig dvc2 = dv2.DocVersionConfig;
+			bool isLinked1 = dvc1 != null && (dvc1.MyEnhancedDocuments != null && dvc1.MyEnhancedDocuments.Count > 0);
+			bool isLinked2 = dvc2 != null && (dvc2.MyEnhancedDocuments != null && dvc2.MyEnhancedDocuments.Count > 0);
+			bool relatedEnh = false;
+			if (isLinked1 && isLinked2)
+			{
+				// does source point to this docversion as enhanced, and does this enhanced point to this source:
+				bool isSource1 = dvc1.MyEnhancedDocuments.Count == 1 && dvc1.MyEnhancedDocuments[0].Type == 0 && dvc1.MyEnhancedDocuments[0].VersionID == dv2.VersionID;
+				bool isSource2 = dvc2.MyEnhancedDocuments.Count == 1 && dvc2.MyEnhancedDocuments[0].Type == 0 && dvc2.MyEnhancedDocuments[0].VersionID == dv1.VersionID;
+				if (isSource1 || isSource2)
+				{
+					int sourceVersionID = isSource1 ? dv1.VersionID : dv2.VersionID;
+					DVEnhancedDocuments enhList = isSource1 ? dvc2.MyEnhancedDocuments : dvc1.MyEnhancedDocuments;
+					if (enhList != null)
+					{
+						foreach (DVEnhancedDocument ded in enhList)
+						{
+							if (ded.Type != 0 && ded.VersionID == sourceVersionID)   // found it.
+							{
+								relatedEnh = true;
+								break;
+							}
+						}
+					}
+				}
+			}
+			return relatedEnh;
+		}
+		#endregion
 		#region SearchPaths
 		public string _SearchDVPath;
 		public string SearchDVPath
diff --git a/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs b/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs
index 8a84e18c..d29c4062 100644
--- a/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs
+++ b/PROMS/VEPROMS.CSLA.Library/Extension/ItemInsertExt.cs
@@ -911,13 +911,18 @@ namespace VEPROMS.CSLA.Library
 								(tran.MyContent.ContentItems[0].ActiveFormat.PlantFormat.FormatData.TransData.TransTypeList[tran.TranType].TransMenu.Contains("Proc") ||
 								tran.MyContent.ContentItems[0].ActiveFormat.PlantFormat.FormatData.TransData.TransTypeList[tran.TranType].TransMenu.Contains("other proc"))) 
 							{
-								string destProcNumber = tran.MyItemToID.MyProcedure.DisplayNumber;
-								foreach (ProcedureInfo prci in tran.MyContent.ContentItems[0].MyDocVersion.Procedures)
+								// B2022-148: cannot insert outside transition in a background document that references a related EOP – transition is converted to text
+								bool dvsLinked = DocVersionInfo.Linked(tran.MyItemToID.MyDocVersion, tran.MyContent.ContentItems[0].MyDocVersion);
+								if (!dvsLinked)
 								{
-									if (prci.DisplayNumber == destProcNumber)
+									string destProcNumber = tran.MyItemToID.MyProcedure.DisplayNumber;
+									foreach (ProcedureInfo prci in tran.MyContent.ContentItems[0].MyDocVersion.Procedures)
 									{
-										forceConvertToText = true;
-										break;
+										if (prci.DisplayNumber == destProcNumber)
+										{
+											forceConvertToText = true;
+											break;
+										}
 									}
 								}