I don't believe anyone would truly know the answer to this unless they worked in the visa office. However, there should be a bring forward date/dates on your file.
For example, if they requested RPRF, they would put a bring forward date three months (just picking a random time line) from the day they asked for it. If they didn't touch your application within those three months, there would be a reminder for them at the third month mark and they should look at your application again and confirm you paid the RPRF.
My answer is based on information I have read on the forum...not from personal experience.