How to split YDD directories into single YDD files (clothes)

Im getting into clothes skinning and i have a question about ydd directories.
Ive been told i need to replace clothing piece by clothing piece, but for my server i received a YDD directory that includes a whole character, but i only want to insert the clothes into the server.
so i have a YDD file, if i open it in OpenIV, i get around 10 things, but i only want the pants, shirt, helmet, belt ect. How do i get them splitted into other YDD files.