Premiere Pro "Replace with AE Composition" weird issue

Hello,

Im having a weird issue with my workflow between Premiere Pro and After Effects:

I have a secuence in Premiere Pro and i want to Replace an individual clip with an AE Composition.

-These clip has a duration of 9:23 seconds

-Right click -> Replace with AE Comp

-AE opens and asks me where to save the project

-AE openes the new composition (Premiere Pro recognizes the link)

-Duration of the entire AE compisition is indeed 9:23 seconds

-But the duration of the clip inside that composition is 8:11 seconds

If i open Premiere Pro, the clip will have a black screen drom 8:11 to 9:23 seconds

So what AE is doing is messing with the clip inside the composition

I already looke elsewhere but seems no one else had a similar issue.

Thanks in advance!

**Also, if i import the whole secuence of Premiere Pro to a AE Composition, every clip inside PP will have a black screen at the last second.