Regarding in-battle form changes and mono-type rules?

Question

Lets say for example I had a mono-psychic team with Meloetta on it, and that Meloetta uses Relic Song. It is no longer a psychic type as long as it is on the field. My question is, can a Pokemon use a move that changes its typing in Mono-type battles, as long as it is originally the correct type?

Comments

Good question.

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Same with Keckleon in mono-normal ;3

Answer 1

Yes just tested on PO with Melo. Melo changed to a fighting type and the battle continued.
:) Hope this helps.