See through painjob

[MattNW]

I changed my Black and Chrome paintjob to add my own tail number. It worked perfectly except when looking out the side window at the engine cowling I get this. I didn't touch that part of the image so I think the problem is in the way I saved the image. Does anyone know what caused this.

[Ivan]

Alpha channel

i lost a transparent window on a Ka-32 that way