i recommend checking out burtron's mod http://www.nexusmods.com/fallout4/mods/3149
as it has more junk to misc option

moves Pre-war money out of junk category into Misc category
removes ablity to use in junk jet, and no longer breaks down to cloth.
and upped the value to 10 credits as in previous games

installation
use your choice of mod manager
or drag esp into data and active with launcher