Sections use wrong form page.

I created three sections, using object Product, for three different flows: A, B and C.

For each section I created its own list page and form page.

When I test how it is working, I see that sections for products B and C use form page for section A. List pages are working fine, and when I open section A, B or C I see correct list page, I edited for each section, but if I open a record form the list, will be opened form page from section A.

I checked: 

• - List page settings for sections B and C;
• - Sections in the Workplace setup (List setup and Page setup)
•  
• and these show correct form page names. So I don`t understand why if I clik on the record list page B or C, will be opened form page A.

What do I need to edit?