Hi,
When IR is running, changing the Max Limit value in the Config tab is making instances disappearing from the rendered image.
EDIT 1: In fact it seems that altering any value during IR is making instances disappear ( tried with Count and Per Square values )
EDIT 2 : OK, I've found the culprit. This is happening only when the instanced objects are Corona Proxies. The thing is that I was using a preset from the Cosmos Library, so it's kind of the default behavior, not the best first impression. IR works fine when they're converted to regular mesh objects.