Custom Texture: transparent background displays in Cineware, but not in Basic

[Annemie]

Hi all. 

I have searched the web and this platform for an answer, but it seems to be a glitch, or I am hoping rather that there is something I am doing wrong.

1. I created a custom texture following this video https://youtu.be/UQhIwAafYq8?t=190 

2. See my basic settings and Cineware settings:

3. See the Archicad view and the render view:

 

4. If I match the settings in the dropdown - update basic from cineware, it just changes the transmittance to 100?

What am I doing wrong? Thanks all!!

Operating system used: Windows 10