On Thursday, e-discovery and information governance software provider Exterro announced its acquisition of Zapproved, an e-discovery software provider that focused on corporate legal departments.

As of today, Exterro and Zapproved will operate as combined, single business under the Exterro brand. However, how its separate products will be affected is still being determined.

Prior to the acquisition, Zapproved was under the portfolio of private equity firm K1 Investment Management, which invested $15 million in company in 2015. After Zapproved is absorbed by Exterro, K1 will roll a portion of proceeds made from the sale back into the business, retaining a minority stake of the combined company.