Bex variable ready for input not displayed in webi

Hi,

I created bex query with some variables.

Variables are defined as "optional" but "ready for input". On productive system the prompts are all displayed, but when i transported the webi report to dev, some prompts are not displayed.

we are on BW 7.31 and BO 4.0. I also tried with BO 4.1. but the problem is the same.

I have no idea what's wrong here! Attached you can find some screenshots on my current settings.

thanks,

Katharina