Its an interesting conundrum. In Denmark the island of Lęsų is an Amm reserve. But it wasn't without it's teething problems as some beekeepers on the island wanted Italian bees and resisted being legally restricted to one type. IIRC the Amm lobby initially won but a change in government meant the Italians could be imported...they were...and then another change and now AMM's only...with a smattering of Italian.
With II any strain of bee can be propagated indefinitely and several unique strains can be kept in the same apiary. Many bee research stations do this. So no problem retaining any unique populations. Sperm can be stored and T-REX resurrected as required.