Collection export as asset browser

[WilliamAsp]

Hi everyone,
i have a problem with object asset browser
My target is model a prop and export like an asset browser in a specific catalog

Now i want export this collection in a specific folder to show this object from all other people of my team
I go to the blender file, select only the collection and export it without any active ticks

Then all team see the object into asset browser

BUT....
if i open the file of the object exported, there is an issue
When make export the plugin create a duble link inside the file, like image

I must open this file, unlink the object outside the collection and save... But i cant do this every time

I want select the collection (with make asset browser in a specific catalog), and export it in a new file... And if open the file i want see only this collection without duplicate object or link not necessary
Is possible?

thanks

[WilliamAsp]

i see this,
if a put a mesh inside collection that i make as asset and export... The file export create a suble mesh linked to the original inside collection

If a create a subfolder... it export the same structure of the original file...

BUT WHY???
Why i must have 2 collection, why i can't use only 1 collection with a mesh children? i don't use a subcollection
Pls help