Sentence:  Now it could not be expected that so much sea being converted into land by this Judgement by two years labour, and but finished and brought to pass in the "6th" year of "Henry" the Sixth, the same land should be in the very next year, "viz." in the "7th" year of the same Kings Reign <WSD>reconverted</WSD> into sea. 
Meaning of the word marked with <WSD> tags:  To convert again, convert back.