Firstly, you cancelled the original invoice instead of the Debit Note with pricing date problem… and you created a new one… 
So, please consider which date you want the original invoice to get the FX rate – 30.07.2016 or 04.08.2016?
If you want it as it was before (30.07.2016), please cancel this invoice 1561002351 and create new invoice with the method you used before (not specifying pricing date). Then recheck your condition pricing date again. It should say 30.07.2016 (see your previous invoice: 1561002340)