B2022-004: BNPP1new, BNPP2, BNPPalr - Crash when adding transition to Parent/Child Procedure & support for PC proc transitions

PROMS/VEPROMS.CSLA.Library/Extension/DocVersionExt.cs

@@ -392,6 +392,10 @@ namespace VEPROMS.CSLA.Library
 		public string UnitSpecific(string str, int len, ItemInfo ii)
 		{
 			ProcedureInfo pi = ii as ProcedureInfo;
+			if (pi == null)		// B2022-004:  Don't crash if Proc PC/PC (ii is from a list, so wasn't an ItemInfo)
+			{
+				pi = ProcedureInfo.Get(ii.ItemID);
+			}
 			if (pi == null) return "";
 			string unitdes = "ID";
 			string prefix = null;