This only applies to BES 3.6 and below. With BES 4.0, you no longer have to recradle after an SRP change (in theory; I get to test this tonight). The reason they have to recradle is because wireless provisioning (wireless activation, wireless key generation, etc) doesn't exist within the 3.6 environment. This is yet another improvement for the 4.0 software and a reason to upgrade.