Weirdly when I roll back my design tree most things i have done disappear, even the stuff that it says is still there and shows no error in the design tree.

I am trying to change the fillet around the extruded part on the body to a long chamfer so the height is reached slowly adding more clearance to the edge.

I am rolling back to fillet 24.

even if I delete the extrude on top of that extrude they both disappear.

I really don't understand what's going on here?

Thanks for any help,

Harry

Student