The inquiry into the sale of SiteServ has asked a company owned by Denis O'Brien to waive confidentiality on up to 50,000 pages of documents.
The Cregan Commission has found that while SiteServ itself has waived confidentiality over some of its banking arrangements with IBRC, its subsidiaries have not.
Those subsidiaries were sold to Denis O'Brien's Millington firm, which has now been asked to waive it's right of confidentiality on those documents.
The issues were highlighted in the Commission's second interim report, published by the Department of the Taoiseach last night.
Enda Kenny has extended the Commission's deadline until the end of June.