I try to Manually edit my BoM to add some details like material for Tool Box Parts which doesn't come on BoM other than some number like 7750.

When I double click on the cell it go to edition mode for a second and move out from the cell. Also I noticed that some change I did to the part property like material in the model level (Not for tool Box Part) is not reflecting in the BoM. I tried to insert a new BoM in which this changes are reflecting correctly but I am unable to manually edit the BoM

Do anyone know what can be done to edit