It is failing to transmit. Electrical power never drops below 190/200 on the craft. The status text in the upper left displays that the science has 100% transmitted with no success. I have three different antennas on the craft and have attempted transmission from all three with zero success. I cheated a new copy of the craft into orbit to try. thinking it may have been something with that particular part when it was created with no luck. Tried moving the science to a science container first and then transmit it with no luck.
Each time I get a message saying it was 100% transmitted however running the experiment again shows it is still available. With my current mod loadout all of the other science (magnetometer, ion trap, dust collector, and ir radiation) has transmitted successfully.