Fergus and I just replaced the method he recommended against by something that doesn't have the problems you observed when not actually playing. For you the only difference is that the custom piece assignment the Applet proposes should not be pasted at the end of the Pre-Game section in the preset, but in a (new) text entry there called Custom Set. (What has to be pasted is also different, but the Applet takes care of that, so it should not concern you.
I don't understand why you would be dependent on someone else to make an Interactive Diagram first. You apparently already went through the piece table to conclude the required pieces are there. Is it really to hard for you to move these pieces from the table to the board, is it just laziness, or is it a matter of principle that you want others to work for you?
Fergus and I just replaced the method he recommended against by something that doesn't have the problems you observed when not actually playing. For you the only difference is that the custom piece assignment the Applet proposes should not be pasted at the end of the Pre-Game section in the preset, but in a (new) text entry there called Custom Set. (What has to be pasted is also different, but the Applet takes care of that, so it should not concern you.
I don't understand why you would be dependent on someone else to make an Interactive Diagram first. You apparently already went through the piece table to conclude the required pieces are there. Is it really to hard for you to move these pieces from the table to the board, is it just laziness, or is it a matter of principle that you want others to work for you?