If a Risk sub-category is added to the Risk Dictionary category, the "look up" does not list any of the Risks in the sub-category, only those from the Parent Risk category are listed.
This is currently by design: the categories defined in the Risk attribute definition do not include their sub-categories.
The idea has been forwarded to our Product Managers as a Feature Request.
If you like this idea, please register your interest by creating a ticket in the Signavio Support portal, referencing this knowledge base article.
We'd also like your business case, so we can better understand the needs of our customers.
KBA , BPI-SIG-CA-RM , Risk Management for SAP Signavio , Product Enhancement