Thanks for your reply.
I had used the latest (trial) version 13.6.0 of Aspose.Words to do the conversion.
I don’t know if there is something wrong in the contents of the RTF file but what is actually happening is this :
If you open the RTF file with MS Word you see, for example, the text “Client Name / العميل اسم” (which is not correct).
But, if you add an Arabic language in your Keyboard (Region And Language > Keyboards and Languages) then you will see the text “Client
Name / اسم العميل” (the order of the 2 arabic words is reversed), which is the correct form of the arabic text.
You can see the same image in the attached XPS file of my first message (which is also created by DevExpress’ XtraReports).
Now, the resulting PDF file converted from RTF by Aspose.Words is always in the wrong form (whether arabic language was added in Keyboard or not).