Print X-Y Plots in the approprate color (Black or Red)

Added logic to keep from failing if an item was not in the sibling list.

PROMS/Volian.Controls.Library/EditItem.cs

@@ -551,7 +551,10 @@ namespace Volian.Controls.Library
 				{
 					EditItem prevChild = nextEditItem.MyPreviousEditItem;
 					EditItem parent = nextEditItem.MyParentEditItem;
+					if(siblingEditItems.Contains(nextEditItem))
 					siblingEditItems.Insert(siblingEditItems.IndexOf(nextEditItem), this);
+					else
+						siblingEditItems.Insert(0, this);
 					MyStepPanel.ItemMoving++;
 					_MyNextEditItem = nextEditItem;
 					nextEditItem._MyPreviousEditItem = this;