Hi Mark....today I created some new flows and then try to use them as subflow in another new flow. It still do not work as desired. But now I know what has changed. Subflow integration is working only for 'Stored Paths' option. It is not working for 'Full Covergae -All possible paths" etc. That means it will work only if I store my paths.
In ARD 2.3 it used to work for other integration options for me. I will send you my files to take a look. Thanks for help!