Bin icon disappear after restart


I packaged my custom parts in a bin and generated the pzbz file. This file contains all parts files, the fzb file and the icon for this bin.

Everything works like a charm except for the bin’s icon. It only works when I import but after restart it’s lost.
After Import
After restart

I tried also to add the icon in the Fritzing folders :

Any idea of a workaround ?

I found the solution, I put the icons in /home//Documents/Fritzing/bins with the fzb file.

So I guess the import process don’t put the icons contained in the fzbz file in this folder.