Forum:Stardust Dragon + Hyper Synchron

What would happen if Synchro summon Stardust Dragon with Hyper Synchron as tuner monster, then I succesfully activate Stadust dragon`s effect, and at the end phase, I special summon through its own effect? Do I have to remove Stardust Dragon from play, or because it was "Special Summoned" through an effect different than the original Synchro Summon, Hyper Synchron`s does not apply anymore?

Of course, Once it is special summoned through its own effect, Do Stardust Dragon`s attack points return to the original amount?