From 5e5aaec5f97aca5804c91e6c504609f77f54cf74 Mon Sep 17 00:00:00 2001
From: UdjinM6 <UdjinM6@users.noreply.github.com>
Date: Wed, 18 Feb 2026 21:15:57 +0300
Subject: [PATCH] fix: MN update notifications had old_list/new_list swapped

Impact:
- UI: Masternode list tab displayed state at block X-1 while node was at block X
- Net: mnauth disconnect handling could miss removals, keeping removed masternode peers connected longer than intended
---
 src/evo/deterministicmns.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/evo/deterministicmns.cpp b/src/evo/deterministicmns.cpp
index ac89530dc6ee..32b2f8b61296 100644
--- a/src/evo/deterministicmns.cpp
+++ b/src/evo/deterministicmns.cpp
@@ -702,7 +702,7 @@ bool CDeterministicMNManager::ProcessBlock(const CBlock& block, gsl::not_null<co
     }
 
     if (diff.HasChanges()) {
-        updatesRet = {newList, oldList, diff};
+        updatesRet = {.old_list = oldList, .new_list = newList, .diff = diff};
     }
 
     if (::g_stats_client->active()) {
@@ -755,7 +755,7 @@ bool CDeterministicMNManager::UndoBlock(gsl::not_null<const CBlockIndex*> pindex
         curList.ApplyDiff(pindex, diff);
 
         auto inversedDiff{curList.BuildDiff(prevList)};
-        updatesRet = {curList, prevList, inversedDiff};
+        updatesRet = {.old_list = curList, .new_list = prevList, .diff = inversedDiff};
     }
 
     const auto& consensusParams = Params().GetConsensus();