From 6de145ef509783252f2966ea21f69457cde435d3 Mon Sep 17 00:00:00 2001
From: Magne Sjaastad <magne.sjaastad@ceetronsolutions.com>
Date: Wed, 8 Oct 2025 11:18:19 +0200
Subject: [PATCH] #12996 Resdata: Prefer UNRST over FUNRST

---
 .../FileInterface/RifEclipseOutputFileTools.cpp     | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/ApplicationLibCode/FileInterface/RifEclipseOutputFileTools.cpp b/ApplicationLibCode/FileInterface/RifEclipseOutputFileTools.cpp
index 846b5b0fdb..b537e3fad3 100644
--- a/ApplicationLibCode/FileInterface/RifEclipseOutputFileTools.cpp
+++ b/ApplicationLibCode/FileInterface/RifEclipseOutputFileTools.cpp
@@ -518,9 +518,18 @@ cvf::ref<RifEclipseRestartDataAccess> RifEclipseOutputFileTools::createDynamicRe
     cvf::ref<RifEclipseRestartDataAccess> resultsAccess;
 
     // Look for unified restart file
-    QString unrstFileName = RifEclipseOutputFileTools::firstFileNameOfType( filesWithSameBaseName, ECL_UNIFIED_RESTART_FILE );
-    if ( unrstFileName.size() > 0 )
+    auto unrstFileNames = RifEclipseOutputFileTools::filterFileNamesOfType( filesWithSameBaseName, ECL_UNIFIED_RESTART_FILE );
+    if ( !unrstFileNames.empty() )
     {
+        QString unrstFileName = unrstFileNames.front();
+        if ( unrstFileNames.size() > 1 )
+        {
+            for ( const auto& candidate : unrstFileNames )
+            {
+                if ( candidate.endsWith( ".UNRST" ) ) unrstFileName = candidate;
+            }
+        }
+
         resultsAccess = new RifEclipseUnifiedRestartFileAccess();
         resultsAccess->setRestartFiles( QStringList( unrstFileName ) );
     }