Originally Posted by
London Dude
There's no info about any of this on aa.com, so you may want to call AA and ask them about Managua, as according to a 2018 thread on the AA forum it's possible that the int-int baggage service in MIA may not be available to all destinations.
Thanks for the heads up. Now that I think about it, it might have been on the return (MGA-MIA-LHR) so destination was London in that case.
Oh well, back to hanging around waiting for the bags....