General rules
You must have the highest admin permissions to make any changes to a BFMC in the RMP.
You cannot reuse a BFMC code; they must always be unique. The RMP will not let a user create a code that a BFMC has previously used.
When a BFMC boundary changes
If a BFMC boundary changes, an RMP admin user will archive the original BFMC and add a new BFMC. The new BFMC can have the same name as the original BFMC (edge case), but it will need a new, unique two-letter code to distinguish it from the old BFMC easily.
When a BFMC name changes
If a BFMC name changes, an RMP admin user must archive the original BFMC and add a new BFMC.
When a BFMC ceases to exist
If a BFMC ceases to exist, an RMP admin user must archive the BFMC—but only when that same area has a new BFRMP with its new BFMC.