It depends on the edge, I prefer to joint the edge, on the corner of the stone as it cut off the flash and makes a straight edge.

I try to get as straight an edge, on a 1k as possible, rather than fight a crumbling edge on higher grit stones. So once the bevel is set, I joint it and reset the bevel on the 1k, with light laps.

I usually lightly joint, additionally at the 8 or 12k, very lightly, then reset on the high grit stone. I also strop on a Chrome Oxide, Sailcloth canvas strop before going to the finishing stone.

I see no point in dulling the edge on glass, once the bevels are flat the edge should come back to meeting, in just a few laps.

As said when doing edge repair or after buffing or sanding, usually requires more edge removal to get to solid steel.