Missing Legacy 1.0 Titles

Some titles from 1.0 that I should have aren't available when selecting new titles. Is there any way to get these unlocked/restored? Certain titles such as "Notorious Monster Hunter".

Date & Time:
Always

Frequency:
Always

Character Name:
Swanson Wyvernsbane

Race:
Elezen

World:
Siren

Class/Level:
Any

Area and Coordinates:
Anywhere

Party or Solo:
Any

NPC Name:
None

Monster Name:
None

In-Game Time:
Always

Steps:
1. Checked Legacy achievements.
2. Certain Legacy achievements confirmed unlocked.
3. Only some Legacy titles are available.