Create a test issue as REPORTER (id = 2)

Check issue state

mysql> SELECT id, reporter_id, summary FROM mantis_bug_table WHERE id=42897;
+-------+-------------+----------------+
| id    | reporter_id | summary        |
+-------+-------------+----------------+
| 42897 |           2 | Test for 37075 |
+-------+-------------+----------------+

Execute SOAP request as UPDATER (id = 3)

POST http://localhost/mantis/api/soap/mantisconnect.php
Content-Type: text/xml

<soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope" xmlns:mc="http://futureware.biz"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soapenv:Header/>
<soapenv:Body>
    <mc:mc_issue_update>
        <username>{{username}}</username>
        <password>{{password}}</password>
        <issueId>42897</issueId>
        <issue xsi:type="mc:IssueData">
            <summary>Test for 37075 - updated via SOAP</summary>
            <description>updated via SOAP</description>
        </issue>
    </mc:mc_issue_update>
</soapenv:Body>
</soapenv:Envelope>

Confirm reporter was changed

mysql> SELECT id, reporter_id, summary FROM mantis_bug_table WHERE id=42897;
+-------+-------------+-----------------------------------+
| id    | reporter_id | summary                           |
+-------+-------------+-----------------------------------+
| 42897 |           3 | Test for 37075 - updated via SOAP |
+-------+-------------+-----------------------------------+

Expected behavior:; unchanged reporter_id