From d0522949250d53852f4779cc01ff6706a7625771 Mon Sep 17 00:00:00 2001
From: xingwei gong <xingwei@localhost.localdomain>
Date: Wed, 15 Apr 2026 11:03:55 +0200
Subject: [PATCH] Fixed ckpt writing that leads to duplicate particle idx.

---
 src/framework/containers/particles_io.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/framework/containers/particles_io.cpp b/src/framework/containers/particles_io.cpp
index 8efff59ac..e6dc7ef5c 100644
--- a/src/framework/containers/particles_io.cpp
+++ b/src/framework/containers/particles_io.cpp
@@ -641,7 +641,7 @@ namespace ntt {
     out::WriteVariable<npart_t>(io,
                                 writer,
                                 fmt::format("s%d_counter", index()),
-                                npart(),
+                                counter(),
                                 domains_total,
                                 domains_offset);