Can't delete Systems in Wily Solman 7.1 SPS11

Hello Guys

Some days ago I started to remove some systems in Wily (non usable systems) but unfortunately I can't remove some systems

I did the following :

- Mark as "No diagnostics relevant" in LMDB

- Removed the WilyHost files as per note 1936777 - How to remove systems from Wily EM

- Reset SMD Agent name

But The systems still showing the system node in Wily, the node only shows the SAP Host Agent Process and SAP Netweaver node is not in the node

Do you have any other ideas? Why the node still there?

I'm using Solman 7,1 SPS11 under AIX With Wily Introscope 9.1.5

Hope you can help me

Thanks