It's been nearly 10 years since I've had to deal with recruiters but I remember asking about DOC requirement and basically it was because they edited my CV befo

It's been nearly 10 years since I've had to deal with recruiters but I remember asking about DOC requirement and basically it was because they edited my CV before passing it onto the client (particularly to cut out any personal information so that the client could not contact me directly). RTF was easy enough the generate though, so it wasn't a big deal for me.