I believe you're talking about the Zigbee Bindings feature of the IKEA Zigbee community drivers; if this is the case, then it has nothing to do with hub updates.
You are right that the user experience is a bit confusing; the challenge is that you can control more than one device with the Rodret device (if you follow again the same procedure you did with your Float lamp). It is not possible to show more than one devices in the drop-down, so it defaults back to showing you the four dashes.
You can see what devices you are currently controlling if you look in the State Variables section:
Hope this helps a bit 
