I think this part of the portal does not work. It
would be better if
it were disabled until time can be spent on it.
You need to send the updates of your address space to the ampraddr
robot as before.
To delete a block, first download the existing allocations from
ftp://hamradio.ucsd.edu/pub/ampr.tar.gz, isolate
what you want to delete, edit the "IN" to "DEL" and submit it to the
robot.