diff --git a/src/libraries/Microsoft.PowerFx.Connectors/OpenApiExtensions.cs b/src/libraries/Microsoft.PowerFx.Connectors/OpenApiExtensions.cs
index 8553cf4921..a754b80cc7 100644
--- a/src/libraries/Microsoft.PowerFx.Connectors/OpenApiExtensions.cs
+++ b/src/libraries/Microsoft.PowerFx.Connectors/OpenApiExtensions.cs
@@ -722,6 +722,11 @@ internal static OptionSet TryAddOptionSet(this SymbolTable symbolTable, OptionSe
                 throw new ArgumentNullException("optionSet");
             }
 
+            if (symbolTable == null)
+            {
+                return optionSet;
+            }
+
             string name = optionSet.EntityName;
 
             // No existing symbols with that name
diff --git a/src/tests/Microsoft.PowerFx.TexlFunctionExporter.Shared/SwaggerFileIdentification.cs b/src/tests/Microsoft.PowerFx.TexlFunctionExporter.Shared/SwaggerFileIdentification.cs
index f8a4f91028..1370fa81ba 100644
--- a/src/tests/Microsoft.PowerFx.TexlFunctionExporter.Shared/SwaggerFileIdentification.cs
+++ b/src/tests/Microsoft.PowerFx.TexlFunctionExporter.Shared/SwaggerFileIdentification.cs
@@ -4,8 +4,10 @@
 using System;
 using System.Collections.Generic;
 using System.Data;
+using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Text.RegularExpressions;
 using Microsoft.OpenApi.Models;
 using Microsoft.OpenApi.Readers;
 using Microsoft.OpenApi.Readers.Exceptions;
@@ -110,7 +112,21 @@ public static Dictionary<string, string> LocateSwaggerFiles(string[] folders, st
                         }
                         else
                         {
-                            throw new InvalidDataException($"Two documents with same number of operations, can't determine which one to select {new KeyValuePair<string, List<(string folder, string location, OpenApiDocument document, List<string> errors)>>(swagger.Key, docs).GetString()}");
+                            int firstVersion = GetVersion(first.location);
+                            int secondVersion = GetVersion(second.location);
+
+                            if (firstVersion > secondVersion)
+                            {
+                                list2.Add(swagger.Key, first);
+                            }
+                            else if (firstVersion < secondVersion)
+                            {
+                                list2.Add(swagger.Key, second);
+                            }
+                            else
+                            {
+                                throw new InvalidDataException($"Two documents with same number of operations, can't determine which one to select {new KeyValuePair<string, List<(string folder, string location, OpenApiDocument document, List<string> errors)>>(swagger.Key, docs).GetString()}");
+                            }
                         }
                     }
                 }
@@ -128,6 +144,15 @@ public static Dictionary<string, string> LocateSwaggerFiles(string[] folders, st
             return list2;
         }
 
+        // searches '<space>[v or V]<number>' pattern
+        private static readonly Regex _versionRegex = new Regex(@"\b[vV](?<v>[0-9]+)\\", RegexOptions.Compiled);
+
+        private static int GetVersion(string str)
+        {            
+            Match m = _versionRegex.Match(str);
+            return m.Success && int.TryParse(m.Groups["v"].Value, CultureInfo.InvariantCulture.NumberFormat, out int ver) ? ver : 0;
+        }
+
         private static void ParseSwagger(string folder, string swaggerFile, Dictionary<string, List<(string folder, string location, OpenApiDocument document, List<string> errors)>> list)
         {
             (OpenApiDocument doc, List<string> errors) = ReadSwagger(swaggerFile);