An Indian tribe may redesign or consolidate programs, services, functions, and activities (or portions thereof) included in a funding agreement under section
458aaa–4 of this title and reallocate or redirect funds for such programs, services, functions, and activities (or portions thereof) in any manner which the Indian tribe deems to be in the best interest of the health and welfare of the Indian community being served, only if the redesign or consolidation does not have the effect of denying eligibility for services to population groups otherwise eligible to be served under applicable Federal law.