diff --git a/db_scripts/diff/15671.down b/db_scripts/diff/15671.down
deleted file mode 100644
index 19d8a5d0..00000000
--- a/db_scripts/diff/15671.down
+++ /dev/null
@@ -1,15 +0,0 @@
-USE provisioning;
-set autocommit = 0;
-
-SELECT id FROM provisioning.voip_preferences WHERE attribute = 'rtp_interface' AND label='RTP interface' INTO @tmp_pref_id;
-
--- Change 'rtp_interface' label to 'default' and apply it to subscribers,profs,domains an peers
-UPDATE provisioning.voip_preferences_enum SET label='default',prof_pref=1,dom_pref=1,peer_pref=1,usr_pref=1 WHERE preference_id = @tmp_pref_id and label='use domain default';
-
--- delete force ext value not do be the default for rtp_interface under usr_prefereces
-DELETE from provisioning.voip_preferences_enum where preference_id=@tmp_pref_id AND label='ext' AND value='ext' AND usr_pref=1 AND dom_pref=0 AND peer_pref=0 AND default_val=0;
-
--- re enable ext for user preferences and disable defailt value for it
-UPDATE provisioning.voip_preferences_enum SET default_val=0,usr_pref=1 WHERE label='ext' AND preference_id = @tmp_pref_id;
-
-commit;
diff --git a/db_scripts/diff/15671.up b/db_scripts/diff/15671.up
deleted file mode 100644
index 93771aaa..00000000
--- a/db_scripts/diff/15671.up
+++ /dev/null
@@ -1,21 +0,0 @@
-USE provisioning;
-set autocommit = 0;
-
-SELECT id FROM provisioning.voip_preferences WHERE attribute = 'rtp_interface' AND label='RTP interface' INTO @tmp_pref_id;
-
--- Change 'rtp_interface' label to 'use domain default' and apply it to subscribers only
-UPDATE provisioning.voip_preferences_enum SET label='use domain default',dom_pref=0,peer_pref=0,usr_pref=1 WHERE preference_id = @tmp_pref_id and label='default';
-
--- Set default value for rtp_interface = ext for domain/peer
-UPDATE provisioning.voip_preferences_enum SET default_val=1,dom_pref=1,peer_pref=1,usr_pref=0 WHERE label='ext' AND preference_id = @tmp_pref_id;
-
--- force ext value not do be the default for rtp_interface under usr_prefereces
-INSERT into provisioning.voip_preferences_enum SET preference_id=@tmp_pref_id,label='ext',value='ext',usr_pref=1,dom_pref=0,peer_pref=0,default_val=0;
-
--- For each domain with no value for rtp_interface, add ext
-INSERT into voip_dom_preferences (domain_id,attribute_id,value,modify_timestamp) SELECT vd.id,@tmp_pref_id,'ext',now() FROM voip_domains vd LEFT JOIN voip_dom_preferences vdp ON vd.id = vdp.domain_id AND vdp.attribute_id = @tmp_pref_id WHERE vdp.domain_id is NULL;
-
--- For each peer with no value for rtp_interface, add ext
-INSERT into voip_peer_preferences (peer_host_id,attribute_id,value,modify_timestamp) SELECT vph.id,@tmp_pref_id,'ext',now() FROM voip_peer_hosts vph LEFT JOIN voip_peer_preferences vpp ON vph.id = vpp.peer_host_id AND vpp.attribute_id = @tmp_pref_id WHERE vpp.peer_host_id is NULL;
-
-commit;
\ No newline at end of file