`db_load` is unrelated, it is useful when using `dmq_usrloc` sync because some contacts are duplicated in memory so in such case loading from the DB is not useful.
`db_load` by default will not change anything but if set to 0 will not load registers from the DB on start up. I did not want to add more `db_mode` because I would have needed to double them.
I could remove `db_load` from this PR if you want but do you have an alternative ?