Why delay giving Grewal tapes to the RCMP?

As was noted several days ago (see, e.g., here), the Tories have committed themselves to give the Grewal tapes to the RCMP.

One paragraph in the story struck me as odd:

"We're going to hand it to the proper authorities -- I would assume it's the RCMP," the source said. "The leader's office is aware of it." He said the transfer will be made once Punjabi portions of the tape are translated, but couldn't predict a time frame.

What I don't understand is why there should be any delay at all. There have been public allegations of illegal behaviour. Why the delay? So they can make their own transcript, one might suppose from the quote. But the recordings are on two CDs. They could burn a copy to keep and give the tapes to the RCMP now, couldn't they?