DBUSQL does not interfere with the audit functionality of DBU. It is a shortcut for using the SQL search function in DBU.
DBUSQL bypasses the need to open a file in DBU. Press F15 to Search, then F9 to Toggle from legacy search to SQL search. Executing the DBUSQL command does all that in one step, bringing the user immediately to the “Data Subset” screen. Any adds, changes, or deletes will be logged to the DBU/Audit journal or DBU change log, if DBU is configured for that process.