diff --git a/PROMS/Volian.Controls.Library/DisplayRO.cs b/PROMS/Volian.Controls.Library/DisplayRO.cs
index bd7f02a3..dc2ff762 100644
--- a/PROMS/Volian.Controls.Library/DisplayRO.cs
+++ b/PROMS/Volian.Controls.Library/DisplayRO.cs
@@ -216,6 +216,9 @@ namespace Volian.Controls.Library
 						CurROLink = null;
 						_savCurROLink = null;
 					}
+					// B2023-004 assign the doc version info associated with the current RTB (rich text box)
+					//           this fixes an issue where unit designators could not be linked in the step edit (BNPP data)
+					MyDvi = _myRTB.MyItemInfo.MyDocVersion;
 
 					MyROFST = (_myRTB.MyItemInfo.MyDocVersion.DocVersionAssociationCount > 0) ? _myRTB.MyItemInfo.MyDocVersion.DocVersionAssociations[0].MyROFst : null;
 				}