Upgrading my license to Compact question

[luvtwilight]

I just applied to upgrade my FL license to a Compact license, as it wasn't a compact state at the time I was initially licensed. I am confused about needing to have fingerprinting done through Livescan. I already have fingerprints on file in the Clearinghouse that are active for 5 years. The application said something about needing to submit fingerprints through Livescan if it had been longer than 90 days. But what is the point of paying for them to be kept in the Clearinghouse every 5 years then? Of course I can't get through on the phone to the board and no reply yet from my email inquiry. Thanks for any help!