Hi
I've created m2m relationships between various entities in CRM before, but since there already exists a one-to-many relationship between Contacts and Opportunities, would it cause any problems if I created a many-to-many relationship between the two entities as well? I might be missing something here, but when I tried it, I noticed that if I add a contact on the opportunity page in a subgrid (referencing the m2m relationship with Contacts), the Contact is added, but I cannot see the result in the equivalent opportunity subgrid on the Contact page. I can add it manually, but that's not what I'm looking for. I want it to show up automatically. Usually that's the way it works. What is so different about the Contact/Opportunity relationship?
Thanks in advance