This is my first post so please be placable.

I have one email box called support@mydomain.com.

Also I have 3 support groups: Support1 , Support2 and Support3.

I have created a business rule that makes "if topic has a word called "Support1" or if description has a work called "Support1" - assign this request to Support1 group".

I have created similar business rules for Support2 and Support3.

They are active.

After that - I send an email to support@mydomain.com with topic "Support2 please help with app problem" - and after a while it is assigned to... Support1 group.

Can you explain why ? Do you need more details ? 

Please help because I've lost my patience.