Hi Rouslan,
Now that version 3.4.3-rc1 is out, normal bug fixes in QA_3_4 should target version 3.4.4. Therefore
- in ChangeLog, they should be under this line: 3.4.4.0 (not yet released)
- in the bug tracker, you should write (ok 3.4.4).
The MAINT_3_4_3 branch is open but should not receive fixes unless we agree about their urgency for the final 3.4.3.
Thanks,