Trimming a clip using Time Stretch trims the frames

Hello to everyone.

I need your help, please.

I have 2 episodes of one serie. One is Italien version and other it`s chinese. The episode it`s the same but the chinese have more time.

Chinese episode have:    00:22:22:10

Italien episode have:        00:21:27:21

I want the chinese episode with 00:21:27:21

After configured Time Strech and render

The episode that's right at the beginning and the end but in half no.

The first minute (+ or -) it´s correct, And Last to.

At 00:11:00:00 The frames aren`t the same or equals.

I'm doing something bad? Or Time Strech only adjust  the beginning and the end and not the video at all?

Thank you.

Title was edited by: Mod