Is there a way to convert shoe poses without weightmapping?

Joltrast

I have Genesis with A3 shape and I used autofit. Everything fits, more or less apart from the boots. The boots appear to already have a heel pose and autofit parents the boots to the figure, so when I try to pose the ankle to fit the boot pose, the boot moves too. (Sorry for the run on sentence). What hacks exist to repose? Both boots load as a single item when unparented if that makes any difference. Thanks!

Richard Haseltine

Those look like boots intended to be used with the feet hidden.