User blog comment:FairyRaven/Fairy Tail Chapter 465: 400 Years, Review and Commentary/@comment-24536822-20151207154630/@comment-4933386-20151207171228

ok. Past = Dragons and Natsu and stuff Present = Grand Magic Games Future = Future Rogue

Natsu used the gate to go to the present. Future rogue used the gate to the present

Destroying the gate in the present will prevent any future things from using the gate cause it's gone permanently.

It won't affect the past because it's not destroyed in the past, if it was destroyed in the past, the present and future will be totally different.

Miskos: I dont think they were different gates... I highly doubt that HIsui and the Kingdom is capable of creating such a machine. Where was it referenced that they made the gate?