Dunno that I would call it an 'issue'. HB just relies on a wider selection of 'ducers. You'd think they'd've made a single, multi-functional unit by now, but no. I believe it's an interference thing (but don't quote me on that). When I made the move to downscan I had to replace my existing 'ducer. When I added the 360 I had to replace it again.
All this said, I believe you'll find the HB to much easier to use, navigate. The user interface is much cleaner, simpler. Fewer buttons to push, faster to get to your setting. You'll like the clarity and resolution of the images, too.