diff --git a/PROMS/VEPROMS User Interface/frmVEPROMS.cs b/PROMS/VEPROMS User Interface/frmVEPROMS.cs
index c2699294..334f5dde 100644
--- a/PROMS/VEPROMS User Interface/frmVEPROMS.cs	
+++ b/PROMS/VEPROMS User Interface/frmVEPROMS.cs	
@@ -936,6 +936,7 @@ namespace VEPROMS
 		{
 			tmrTreeView.Enabled = true;
 		}
+		private int _LastROFSTID = 0;
 		void frmVEPROMS_Activated(object sender, EventArgs e)
 		{
 			if (ActiveControl == tc) tc.HideCaret();
@@ -953,16 +954,24 @@ namespace VEPROMS
 				{
 					DSOTabPanel myDTP = myDTI.MyDSOTabPanel;
 					SelectedROFst = myDTP.MyDisplayTabItem.MyItemInfo.MyDocVersion.DocVersionAssociations[0].MyROFst;
-					displayRO.MyROFST = SelectedROFst;		// need this to update RO Tree after UpdateRofst (B2015-226)
-					displayRO.MyROFSTLookup = SelectedROFst.GetROFSTLookup(SelectedDVI);
-					displayRO.RefreshRoTree();
+					if (_LastROFSTID != SelectedROFst.ROFstID) // B2017-240 Only refresh when the ROFSTID is different
+					{
+						_LastROFSTID = SelectedROFst.ROFstID;
+						displayRO.MyROFST = SelectedROFst;		// need this to update RO Tree after UpdateRofst (B2015-226)
+						displayRO.MyROFSTLookup = SelectedROFst.GetROFSTLookup(SelectedDVI);
+						displayRO.RefreshRoTree();
+					}
 				}
 				else if (tc.MyEditItem != null && displayRO.MyROFST != null && tc.MyEditItem.MyItemInfo.MyDocVersion.DocVersionAssociations[0].ROFstID != displayRO.MyROFST.ROFstID)
 				{
 					SelectedROFst = tc.MyEditItem.MyItemInfo.MyDocVersion.DocVersionAssociations[0].MyROFst;
-					displayRO.MyROFST = SelectedROFst;		// need this to update RO Tree after UpdateRofst (B2015-226)
-					displayRO.MyROFSTLookup = SelectedROFst.GetROFSTLookup(SelectedDVI);
-					displayRO.RefreshRoTree();
+					if (_LastROFSTID != SelectedROFst.ROFstID)// B2017-240 Only refresh when the ROFSTID is different
+					{
+						_LastROFSTID = SelectedROFst.ROFstID;
+						displayRO.MyROFST = SelectedROFst;		// need this to update RO Tree after UpdateRofst (B2015-226)
+						displayRO.MyROFSTLookup = SelectedROFst.GetROFSTLookup(SelectedDVI);
+						displayRO.RefreshRoTree();
+					}
 				}
 			}
 			if (SelectedStepTabPanel != null && SelectedStepTabPanel.MyStepTabRibbon != null)