The 1953 RLDS edition has a typo here, namely, impart for the correct past-participial form imparted. The original manuscript is not extant for the final ed of imparted, but undoubtedly the -ed ending was originally there. (The grammatical change of was to were is typical of Joseph Smith’s editing for the 1837 edition. See the discussion under subject-verb agreement in volume 3.)
Summary: Maintain the correct past-participial form imparted in Alma 54:2.