Verified the E2E tests for clearing milestone due date are fully implemented and passing. **Test file:** tests/e2e/test_update_milestone_clear_due_date.py **Test run results:** 4 passed in 9.07s 1. test_clear_due_date_to_none - PASSED 2. test_clear_due_date_preserves_other_fields - PASSED 3. test_clear_due_date_table_reflects_change - PASSED 4. test_set_then_clear_due_date - PASSED The tests were previously implemented in TRCKR-646. This branch (TRCKR-534) is identical to master - no additional changes needed. Closing as duplicate/already implemented.

[QA] INCOMPLETE - This is a duplicate issue. The E2E tests for clearing milestone due dates were already implemented in TRCKR-646 (commit e51f5e4, Dec 22 2025). The test file tests/e2e/test_update_milestone_clear_due_date.py contains 4 comprehensive tests and already exists in the master branch. No code changes were made in the TRCKR-534 branch - it is identical to master. Recommend closing this issue as duplicate/already implemented.

Verified that E2E tests for clearing milestone due date already exist and pass. **Test file:** tests/e2e/test_update_milestone_clear_due_date.py **Tests included (4 passing):** 1. test_clear_due_date_to_none - Clear a milestone due date to remove it 2. test_clear_due_date_preserves_other_fields - Verify clearing due date preserves other fields 3. test_clear_due_date_table_reflects_change - Verify the table updates after clearing 4. test_set_then_clear_due_date - Full lifecycle test: set then clear due date **Test results:** 4 passed in 8.96s The tests were previously added in commit e51f5e4 (TRCKR-646). This issue appears to be a duplicate or was already completed.