President Donald Trump’s campaign legal team sent a memo to dozens of staffers Saturday instructing them to preserve all documents related to Dominion Voting Systems and Sidney Powell in anticipation of potential litigation by the company against the pro-Trump attorney.

The memo, viewed by CNN, references a letter Dominion sent to Powell this week demanding she publicly retract her accusations and instructs campaign staff not to alter, destroy or discard records that could be relevant.

A serious internal divide has formed within Trump’s campaign following the election with tensions at their highest between the campaign’s general counsel, Matt Morgan, who sent the memo Saturday, and Trump lawyer Rudy Giuliani. Though the campaign once distanced itself from Powell, Trump has been urging other people to fight like she has, according to multiple people familiar with his remarks. He has asked for more people making her arguments, which are often baseless and filled with conspiracy theories, on television.