Resolved How to preserve sprite size with Aseprite importer

Hi, i am currently trying to import sprites from Aseprite with a lot of layers each for an individual part of a character. My layer structure looks like this:

The sprite is 64x64px and I need to preserve that size because of the position of each body part or clothing. Currently I cannot find an option to preserve the size and all slices are trimmed. Is there an option to set the slicing mode to per cell size instead of trimmed?

 

Hi Ted, thanks for the answer.
I use sprite libraries and sprite swap to construct a character. My Aseprite files contains a layer for each part which can be modified in my game, for example there are different pants, hair, jackets, shirts etc.. After the import every sprite is by its own size, e.g. 10x12 px. My character is constructed in a 64x64px sprite. Now I am missing every position of these parts. Everything would be at the center.
But if Aseprite saves a trimmed sprite how do they know where the sprite goes if I load a saved file?
This is how I currently export the sprites to png and then to unity (this is a hairstyle):


In Unity i have something like this with the Aseprite importer:

 

Maybe I am missing something. I can only choose between "Animated" and "Sprite Sheet" as import mode. Only when choosing animated I can set the pivot space. But it works now with that combination, thanks