If you leave that frame in as a food source the bees can eat of it during the winter over. Or save it for spring feed when they’ve ate through their winter supply.
I was going to leave all of the frames in but when I saw it start to crystallise I thought that its no use in having frames blocked full of crystallised honey… ?
I don’t recommend leaving it on over winter. You could put it over the inner cover and many times the bees see that as outside the hive and will clean it out and move the stores down.