Regulation mappings are done in between major releases of Security Management. Next one up is R82 which should bring all the latest definitions as part of the major build.
In the 10.3.4 mapping, it is mapped to best practice FW108 which checks that in the event that firewall logs are being deleted, the field 'Run the following script before deleting log files' is selected and that a script is documented.
This best practice is based on the directive that Firewall logs should not be deleted without ensuring that they have been saved in an alternative location.
This also has a dependency to best practice FW 114 which checks each Gateway that Firewall logs are only deleted when the available disk space reaches a minimum level of 15% or 45 Mb. Note that we recommend a script to be run to copy the Firewall logs prior to deletion.