Preparations:

In IDE:

1. open "core/kernel/db/db_event_handler.php" file for editing
2. locate "\kDBEventHandler::_update" method
3. change "if ( $object->Update($id) ) {" line into "if ( $object->Update($id, array('l1_Translation', 'LastChanged', 'LastChangeIP')) ) {"
4. save changes

Test 1

In Admin Console:

1. go to Website & Content → Labels & Phrases section
2. open any record for editing
3. change these fields: "Label", "Phrase" and "Column Phrase"
4. save changes
5. confirm, that only "Phrase" field value was saved into database
6. confirm, that "These fields weren't updated for #4177 record in "phrases" unit: Phrase, PhraseKey" error message (the ID of record might be different) was added into the Logs & Reports → System Log section (the "l1_ColumnTranslation" field wasn't listed there due D383)

Test 2

In Admin Console:

1. go to Website & Content → Labels & Phrases section
2. open any record for editing
3. change these fields: "Phrase"
4. save changes
5. confirm, that "Phrase" field value was saved into database
6. confirm, that no new record was added into the Logs & Reports → System Log section