Catholic priest becomes Anglican, valid consecration?

I’ve read of several Catholic priests who have left the Church in the recent past, and have become priests in the Episcopalian Church. Since once a priest, always a priest, do they validly consecrate the bread and wine into the Body and Blood of Our Lord, Jesus Christ?

While the Anglican ordination ritual has been declared invalid by the Church, I am unaware of any document that declared their communion liturgical prayers to be so far theologically askew as to invalidate them.

Someone ordained under the Anglican ritual would be invalidly ordained and therefore unable to validly confect the Eucharist no matter which communion liturgy he used.

However, someone who is validly ordained and becomes an Anglican minister would be able to validly confect the Eucharist provided he had the proper matter, form, and intention.

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