FF: Research vs Advanced

erpetdoc

I had some time to kill this morning after I temped.  Thankfully it's been a quiet night at work, so I got a decent amount of sleep.  I clicked on the "tuning/override" button and changed it to "research" method...just to see what happened.  The first time I did it, it moved my O date back two days, making me 6 dpo.  I switched it back to advanced, answered a couple emails, and even posted on the 2WW thread.  I then started this post, made the same switch, and it did not change my O date.  (So, now, both research and advanced have me at 4dpo with the same coverline.)

What exactly *is* the research method, and what would have made it change me to 6 dpo for a brief period of time?  6 dpo would have had me ovulating the same day I got my first positive OPK, which doesn't sound right at all. 

Just curious. 

MrsP610

I can't really answer your questions, but my brief knowledge of FF and charting it does look like the new O line is the correct date.

Based on what I read in the link below, the research method makes your chart an experiment for them to try new tools.

https://www.fertilityfriend.com/Faqs/Fertility_Friend_Interpretation_Methods.html