Japanese Wiki: 9392
Switch is a keyword action.
It is the act of exchanging a
card from different zones with each other simultaneously.
They can be done by the
Revolution Change keyword and Upheaval. In the latest printing of Upheaveal, it was expressed as "交換" (exchange / swap).
Almost all card effects known as "changes" such as "Shield Change" or "Hand Change" are handled as simultaneous movements. There is a Marshall Extra Win decktype based on a loop utilizing this.
(August 9th, 2018) Duel Masters - General Game Rules: Version 1.9 701.25. Switch
701.25a To switch is to exchange a card from different zones with each other simultaneously. Then all the possible actions required by the switched card are performed. (A card switched by Revolution Change ability is in an attack state.)
(August 9th, 2018) Duel Masters - General Game Rules: Version 1.8 701.25. 入れ替える
701.25a 入れ替えるとは, 2 つのゾーンにある別々のカードを, それぞれの位相のままに場所を交換するということです.このとき, 入れ替えられたカードが何らかの行為を行っていればその行為を行うは入れ替えられたカードが行うことになります.（革命チェンジで入れ替えられたカードは攻撃状態にあります.）