Overlapping-alpha transparency mess after unjoing planes

Support Compositing and Post Processing
1

Hello,

I pressed the P-key and seperated all planes by loose parts to edit each of them individually.

Now I finished editing them, I rejoined them again. But the result is atrocious;
overlapping transparency is messed up and it looks nothing like it was before I unjoined the planes.

Is there a way to rejoin all the planes and get their nice overlapping-alpha tranparency back ?

(I’m a newbie and sorry for my English).

2

We have no idea what your problem is as you are the only person here who can see anything useful.

For support please ALWAYS supply a link to a demo blend file that clearly demonstrates the problems you are having. Without that we are all working blind !