Just a few questions

[Halizu]

If you master rogue, then master ranger but then want to swap to another spec, eg. ninja, do you lose master ranger title?
If you master ranger but then become a caster, are you no longer a master ranger?
If you then want to go back to being a ranger, are you still level 55?

 

[Aburido_burrito]

No, if you master a class, you keep the title

 

[Hydroking77]

And you keep the levels.