I configured postgres in the core, tables were created, all good.

But i just noticed that the sqlite3 files in /var/lib/freeswitch/db/ are still being updated:

-rw-r----- 1 freeswitch freeswitch   14336 Jun  3 18:14 /var/lib/freeswitch/db/call_limit.db
-rw-r--r-- 1 freeswitch freeswitch  242688 Nov 26 12:13 /var/lib/freeswitch/db/core.db
-rw-r--r-- 1 freeswitch freeswitch 4054016 Nov 26 11:10 /var/lib/freeswitch/db/sofia_reg_external.db
-rw-rw---- 1 freeswitch freeswitch      33 Nov 26 12:11 /var/lib/freeswitch/db/zrtp.dat

Is this right? Isn't the point of using db in the core _not_ to use sqlite?