SH/Guild Inactivity Question

I was wondering, in the past there was some type of process in place that if guild owners didn't login for an extended length of time they could lose ownership of the guild as it would be automatically passed down to the next highest ranked member and all that.

Does anyone know if this is still the case? And if so, does anyone know what the length of time is that this might occur?

IIRC this has been a bit of a mystery and it's hard to find info on the topic.

Thanks