Farsi / some characters disobey... World Tools Forum

Hello!
I use InDesign CS6 with WordTools Plugin 2.0.7. So far I have been able to deal with almost anything I had to do but today I came across a strange problem. I set the text in Adobe Arabic, Karim LT and a few other fonts but none will help. Of course I use World-ready composer, I set the paragraph direction as RTL and mostly the text is fine. There are just a few places where one of the characters which should resemble "d" is actually reversed and looks more like "p" as a result. I pasted the word below and funny enough it is correct in here (at least until I submit the form, the character in question is the 4th one when you count from the left, or 7th if you count from the right). I do not see a way to attach a screenshot which is a pity because I cannot show what the text looks like and what it should look like.
پرداخته‌اند

Do you have any idea what to do to fix this?
Thank you very much in advance!