So I'm trying to do the inverse of what someone else posted about. Basically I want to make it so that minicopters cannot blow up when crashing. However, I can't seem to get the entity groups or rule set right. When I do the trace to see what is being called on, I get this:
======================
== STARTING TRACE ==
== 18:28:59.64881 ==
======================
From: MiniCopter, minicopter.entity
To: MiniCopter, minicopter.entity
No shared locations (empty location) - no exclusions
No exclusion found - looking up RuleSet...
Using RuleSet "default"
======================

So it appears that the minicopter is dealing damage to itself. And then for the entity group I have:
{
"name": "minicopter",
"members": "MiniCopter, minicopter.entity, scraptransporthelicopter",
"exclusions": ""
}

In the rules I have, "minicopter cannot hurt minicopter", but it doesn't seem to work.

Any ideas?