Ip pool lease migration

Hi all, I have two FR instances up with only one (let's call it radA, the other radB) actually serving IP addresses from several ip pools. Is it a good idea to use rlm_ippool_tool to extract leases from radA and then inserting them in radB with rlm_ippool_tool -n ? I think it would be better to use sql_ippool (having only one centralized ip pool cache), but now it's not a viable solution to me. Suggestions are always welcome. :-) Thanks in advance, Francesco.