Just to get it out of the way, it's not a "something else happened" scenario.
My gas utility reports to EQ and TU. EQ generally updates the balance monthly for whatever the bill is for the month (TU is more infrequent). Sometimes the same balance will display for a few months, then it will be updated.
My balance has recently been reporting as $140 for the past several months. Now it has updated on EQ to $39, which is a 72% decrease.
As a result, my EQ04 dropped 12 points and my EQ08 dropped 7 points.
Does anyone know if there are any FICO intricacies that would cause an inverse relationship between balance and score on utility accounts specifically? This makes absolutely no sense to me.