Synchronize AMS?

Quick question, I’ve only had my h2d for a couple of weeks, it’s all working fine. I have 2 AMS units, one going into the left nozzle, and one going into the right. At the beginning it asked me to synchronize the AMS, which I did, but every time I do a print, it asks me to synchronize the AMS (every single time), it’s no big deal, but gets a little irritating, is that normal? I assumed you’d only have to do it if you put a different colour filament into the AMS.