Multi-Cut tool doesn't go all the way through geometry

[maeyoshi]

Hello,

I'm having trouble with Multi-Cut tool, but I think it has to do with my geometry. 
I'm trying to insert an edge loop on a surface using Multi-Cut tool, but the edge cuts off in the center of the geometry. 

I checked the center part, but there doesn't seem to be double vertex, edges, or faces around it. 

But when I see the geometry in Vertex Face mode, there is a plane separating right and left parts of the geometry, and I think that's the reason why the Multi-Cut tool only works in either part of the geometry at a time.

I'm using Maya 2020. 

I have attached my Maya file here.
I would really appreciate it if someone could solve this issue. 

GeometryMulti-CutVertex Face mode

[Anonymous]

hi, just delete that plane they should not be there and thats is

[maeyoshi]

I can't delete it.

[mspeer · Accepted solution]

Hi!

Select this part only (some faces) and use Show -> Isolate Select -> View Selected

Then you can delete these faces inside (there are 2 faces on top of each other), then it works.

[maeyoshi]

Thank you!
Could you tell me which faces are overlapping? 
I can't find them.

[maeyoshi]

Never mind, I figure that out!
I was able to delete the double faces inside and Multi-cut now works throughout the geometry!

Thank you so much!!
You are my savior!

[maeyoshi]

Thank you so much!
I was able to delete the double faces inside and Multi-cut now works throughout the geometry!

You are my savior!