Hi,

What happens when you try to use the commands, is a message returned?

Searching for "Supported IMS DB commands" I find this documentation URL: https://www.microfocus.com/documentation/enterprise-developer/ed80/ED-VS2022/BKCBCBIMIDS001.html which includes information about the DIS command.
If that does not help to answer your question then you can consider to raise a support ticket where my colleagues can perform further research and confirm the answer.