Update 2:
so the work around (if this doesn’t get patched) to using your MHA but still animate it in maya would be to export a standard MH in 5.2 but keeping the same body proportions as your MHA. The animations will work on any MH once exported to UE, so it’s all fine as is.
UPDATE
i upgraded an old meta to 5.2 and exported fine to maya. seems like it’s just the MH created from MHA is the one that doesn’t export correctly, which makes sense since it’s still in beta.
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metahumans generated from MHA don’t export in maya 
let me try a work around tho.
