When i try to run deform with existing weights or capture and deform on my fur sim in lops.
all the hairs seem to be removed from the head.

When I capture and deform or deform using existing weights in sops everything just seems to work (minus it not looking perfect)
I have waisted quite a bit of time trying to get this to work already.

Does anyone have any advice ?
Should I import the entire groom after editing it from sops or is there a way to have it work on lops level

bump

It's hard to tell without a hip file to look at, but I suspect there is something about how the parent prims are being transformed, that is causing the hair deform graph trouble... We've tried to add warnings/errors to the Hair Procedural LOP to catch these cases, but they're often very difficult to detect/inspect

When you do your SOP-level capture/deform, are you doing this within a SOP Modify? Are there point-counts changing per-frame on the groom?

If you can log a bug through support, that'd be best in this case I think...