diff --git a/ymir/agents/backport_agent.py b/ymir/agents/backport_agent.py
index f6d4f84b..83642b31 100644
--- a/ymir/agents/backport_agent.py
+++ b/ymir/agents/backport_agent.py
@@ -815,8 +815,6 @@ async def extract_source_changelog(
             continue
 
         for line in entry.content:
-            if re.match(r"^\s*[-\*]?\s*(resolves|related):", line, re.IGNORECASE):
-                continue
             if line not in seen:
                 seen.add(line)
                 collected_lines.append(line)
diff --git a/ymir/agents/log_agent.py b/ymir/agents/log_agent.py
index fbaeaf24..1186a6ac 100644
--- a/ymir/agents/log_agent.py
+++ b/ymir/agents/log_agent.py
@@ -43,8 +43,8 @@ def get_instructions() -> str:
 
          If a source changelog message is provided in the prompt, use those lines as the
          exact changelog message content. Keep the descriptive lines exactly as-is — do not
-         rephrase, summarize, or add to them. Add the Resolves/Related line
-         for <JIRA_ISSUES>, matching the style of existing changelog entries.
+         rephrase, summarize, or add to them. Only replace the Jira issue references
+         in any Resolves/Related lines with <JIRA_ISSUES>.
 
          If no source changelog message is provided, write a new entry. In general,
          the entry should contain a short summary of the changes, ideally fitting on a single line,