HD morph partial clearing?

DavidGB

Can anybody tell me if the function in the geometry tool of more recent 4.9s to clear the effects of a particular morph from selected faces works on HD morphs, enabling a partial version of that HD morph to be saved as a different morph for further use later? Or does it only work on SD morphs, in line with only PAs havinng the tools to create HD morphs? Thanks.