From the *woods site:
"With American Airlines, you can transfer up to 99,999 StarpointsSM into AAdvantageŽ Miles at a 1-to-1 ratio. And for every 20,000 Starpoints transferred you'll earn 5,000 bonus Starpoints, which will be automatically added to your transfer."
I assume that this means one can transfer 99,999 *points per transfer but that there are no limits on the number of transfers that can be made. Is this correct?