Symptoms
The BizTalk Adapter for WebSphere MQ (MQSC Adapter) uses the character set 1252 to send messages, although you configure the Send port with the OEM-United States (437) character set.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
This issue is fixed in the following cumulative update for Host Integration Server:
References
Learn about the terminology that Microsoft uses to describe software updates.