Hello Erwitz,
I've never talk about ERM, and in that case you are speaking, yes, you are right.
There are many ways to do retention management.
-> Do it yourself
-> Use the standard tools from CMOD (arsmaint + expiration types)
-> ERM + some custom rules
Each has some positive and negative aspects.
I was just telling Justin, one way to use a standard function of CMOD without relying on ERM... because ERM is a paying function, and sometimes it is not needed... sometimes only :-D
Regards,
Alessandro