Merge actors operation results in meshes with 0 tri's

Hi Braisbr1,

I tested on 4.15 and confirmed the issue has been fixed. Would you mind testing this yourself to confirm?
Since this has already addressed a bug report isn’t necessary. I also checked and it looks like a JIRA wasn’t filed for this either meaning that the fix isn’t really documented. I hope that helps and happy developing!

Cheers,

Ed