Assume that you use the Microsoft BizTalk Server 2016 with Cumulative Update 5 (CU5) or CU6. When you rename BizTalk groups, a complete group rename may not occur. This is because the startup process for the service may still use the old group name and the BizTalkGroupName (32-bit and 64-bit) registry entry may not be updated on the BizTalk group server nodes. Additionally, you may notice that the newproperties of the SFTP adapter are not reflected in BizTalk.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For information about the service packs and cumulative update list for BizTalk Server, see the following article in the Microsoft Knowledge Base:
2555976 Service pack and cumulative update list for BizTalk Server
For more information about BizTalk Server hotfixes, see the following article in the Microsoft Knowledge Base:
2003907 Information about BizTalk hotfixes and Cumulative Update support