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Only A mount lenses will work on the A99 II, so the 55/1.8 ZA is out.
Sony A mount was originally Minolta Alpha mount from the film days whose flange back is 44.5mm, whereas that of E mount is only 18mm. So there is not hope for the E mount 55/1.8 can be made into an A mount version, unfortunately.
The A99 II can take Minolta autofocus A mount lenses and Sony DSLR A mount lenses, but not mirrorless lenses. Sorry, I wasn't clear enough in my orevious post.