Ghost build and paste entity settings have the same hotkey. Doing some more testing, when I have the settings of an assembler selected and then place inserters with construction robots, the last inserter sometimes copies the settings of which ever assembler recipe is copied. Seems to be 25/75 that ...

When I place the last inserter, of any type, I have in my inventory, it automatically adopts a filter for the item(s) required by the recipe of the assembler its attached to. Have only attempted with assembler 2. Running 2.0.15 and Space Age DLC.