Good points.
For #2, if you set the same value of "Bounce attack prevention seed" on all the control centers for BAP to work properly as indicated in the Admin Guide:
QUOTE:
Warning: If you are running your inbound and outbound messages on different
Scanners with different Control Centers, repeat steps 1 through 3 for each
Control Center, using the same seed value. This ensures that all inbound and
outbound servers are calculating the same tags for validation.
UNQUOTE:
Can you please share what problems did you have and how were those resolved?
Regards,
Adnan