Filming Dates - Info in submission form leads to strange link?

Hello.

Entering "Filming Dates" on a title for the first time,

I therefor click the Questionmark in the form.

that says;

----------------------------------------------------

Filming Dates - Help

• The dates for principal photography.
• If either the start date or end date is known, but not the other, use the "unknown" check box.
• Compare with the Production Dates field

--------------------------------------------------------------------------------------

I click on the "Production Dates" link, which leads me to this adress;

https://help.imdb.com/article/contribution/contribution-information/submission-guides-a-z/GWBAHK9SAMVR3DP5# 

What am I missing here?

If I search on that page for "Production Date" I get no "hitts".

Does this link to the wrong page, or is the info missing on that page?

"filming date" does not give any results either

--------------------------------------------------------

Also in the "A-Z of All Guides"

it's not in complete alphabetical order either,  " F " is in 2 places.