Historical Rules · 23 August 2019
Rule 707.8
Official source text from the 23 August 2019 Rules release
As a face-down permanent is turned face up, its copiable values revert to its normal copiable values. Any effects that have been applied to the face-down permanent still apply to the face-up permanent. Any abilities relating to the permanent entering the battlefield don’t trigger and don’t have any effect, because the permanent has already entered the battlefield.