Aerial imagery background transparency in xref not beeing transparent in the sheet

[cyberflow]

Hi forum,

I've beeing struggling right here i'm calling a xref that has all the aerial images.

It has a big basic tile and over it it has drone imagery that we choose to set the background transparent 

It works, inside the aerial image reference; but when we call it in the sheet file it doesnt work properly : 

Anyone knows whats happening ?

[jmayo-EE]

Confirm that your xref layer still has the transparency value applied.

Confirm that you sheet's page setup has Plot Transparency checked. 

[cyberflow]

@jmayo-EE : Thank you for the reply

I'm talking about the transparency to see tru the black background

Not the transparency of layering

[n_bartholomew]

What file type is the image?

[cyberflow]

@n_bartholomew Hi, thx for the reply

The one that is send to back (The big tiled) is a jpg
The drones are done with geotiff, they show transparency on the backgrounds

I have another xref that they aren't cropped and the transparency works fine
I dont know what it does that

[cyberflow]

@n_bartholomew 

I think i may know why

I cropped the images and exported them and re inserted them

Maybe it has something to do with the export format i've choosen ?