Yes, he worked on many of his translations, and kept working on the Cantos. His Bibliography lists the following works published during and after his imprisonment, which was from 1945 to 1958:
The Pisan Cantos (also see below), New Directions, 1948.
The Cantos of Ezra Pound (includes The Pisan Cantos), New Directions, 1948, revised edition, Faber, 1954.
Selected Poems, New Directions, 1949.
Personnae: The Collected Poems of Ezra Pound, New Directions, 1950, published in England as Personnae: Collected Shorter Poems, Faber, 1952, new edition published as Collected Shorter Poems, Faber, 1968.
Seventy Cantos, Faber, 1950.
Confucian analects, translator, 1951
The Translations of Ezra Pound, translations (London) 1953
Section Rock-Drill, 85-95 de los Cantares, All'Insegna del Pesce d'Oro (Milan), 1955, New Directions, 1956.
Sophocles: The Women of Trachis. A Version by Ezra Pound, translation (London) 1956
Thrones: 96-109 de los Cantares, New Directions, 1959.
The Cantos (1-109), new edition, Faber, 1964.
The Cantos (1-95), New Directions, 1965.
A Lume Spento, and Other Early Poems, New Directions, 1965.
Selected Cantos, Faber, 1967.
Drafts and Fragments: Cantos CX-CXVII, New Directions, 1968.

