How the Friendship Games would tie in both the Old and New Timelines

Having seen the deleted scenes of the "Friendship Games" on Youtube, here is my opinion.

The Old Timeline's version retains the sub-plot of the Pony Sunset beginning to feel homesick and so the duet version of "What More is Out There," her talk with the Pony Twilight and the Rainbooms, and the Alternate Ending is kept. The New Timeline has the current released version.