Glyphs Does not paste glyphs to the selected master

a font with two masters Regular and Bold. Pasting Glyphs from another glyphs file to the bold master does not work. glyphs paste it in the Regular Master. even if the Bold master toolbar Button is selected.

Hold down option while pasting. And choose options in the upcoming dialog.

tried with deselecting all data. and it works.
actually option dialogue terms is confusing

Open for suggestions.

May be a ? Button tells more details about which all data to be copied/pasted

Good idea. We’ll think about it.