So i have this dissolved weldment in this bom, I want to combine two of the items because they are the same, when i click combine identical items, its just shows that little sign next to it and doesn't actually combine it and then increment the quantity.

I will admit, i am not knowledgeable about weldments so maybe there is something there. Also when i put the parts into subweldments i don't know what i did with the folders and made them like 2-3 folders deep and i have no idea why i did this. Ya any help with those weldments would be great to as in the properties and cut length the ones not in the folders show up with actual length and proper properties for each one. Ya anyone have a proper vid on weldments would be great, something more indepth than the solidworks lessons