Just replaced a Helix 9 SI unit with Helix 12 unit at my console. On first test drive, the transducer is mapping AC live data at low speeds but I lose AC live and all previously mapped data on my chart screen when I get on plane above 25mph. With my H-9 transducer I was able to map live and see previous data at speeds up to 55mph. Is that capability going to be available with the new H-12 Mega Chirp transducer if I get it installed in the optimal position?