Nope, only 1 legacy here & I lost all non-Reputation granted legacy titles despite the fact they're still marked as "Completed" AND being worn on some toons.
Incomplete achievement progress has been multiplied by the amount of toons transferred.
For example:
> 13 toons transferred from Dalborra to Bastion.
> I Am Death Incarnate: 28322 on Dalborra; 368186 on Bastion.
> 13x28322=368186