Some prop_detail missing

[viscid cairn]

When I compile maps, some of my prop_details are missing from the final map.
The mdls are in the right place and I dont see any compile errors

Some prop_detail missing

[worldly brook]

don't add prop_details manully to your map, there used with the detail props in the detail.vbsp which get added to grass and displacements https://developer.valvesoftware.com/wiki/Detail_props , if you have to add custom ones you need to write a custom detail.vbsp and enable hammer to use it at compile time, which you add to the map properties