I have added dateexpiry to the SysPref PatronQuickAddFields but Expiry Date is not included on 'Quick add new patron' form
Tested this, a couple more fields I found that are also not showing: dateofbirth debarred debarredcomment lost This was on clean k-t-d, not sure if intended or not. I may be missing some context, but expectation was that it showed once toggled. address and address2 worked.