Apparently It Is a Word

[faustus]

De-duplicate.

"In order to de-duplicate effort and to ensure that we offer the best experience to all our users, the old telephone directory has been removed."

Comments

[ticking-fool.livejournal.com]

Somebody, somewhere, has to suffer for that.

[bookzombie.livejournal.com]

De-duplicate is certainly a word in my industry. It's used to describe the process of removing duplicate entries - for example if you have recorded a customer twice under similar addresses and you want to make sure that all orders point to one of the customers.

But in the context you have it here - that's just wrong!