Do you mean keep any pumps/canisters/studs/etc assigned to her? There is not currently a way to keep those items on her as the game checks the number of slaves currently equipped with those items before showing them up as a valid/invalid selection (similar to how the game calculates beds).
The best workaround would be to create a temp farm storage in person.gd mirroring their originalwhich would assign all of the farm’s factors to before unassigning the slave from the farm, then have it attempt to check/add each of those factors back when reassigned or failing to default if it’s not available. It should work if that’s what you’re talking about, it just may be cumbersome.