[Remove Real Fixtures]

For me the situation was quite weird. I kept getting the same error over and over, but at a certain moment I didn't get the error anymore. However, when I'm trying the same thing in the 19.3.0 database I get the same error message again. I also tried changing the Mode(debut version), this didn't work either. The weird thing is, when I import the file I created in the 19.1.0 database, and changed the teams in de second division, it has no problem testing and validating. I have no clue what the logic is behind this error, so I have added the database, in which it works, to this comment. Maybe someone else can find the solution.

Dutch1.fmf

[Remove Real Fixtures]

Alright, I'm trying to redesign the Dutch league pyramid without youth teams.
But I'm constantly getting the error of:  Number of teams in Eerste Divisie(20) doesn't match up with number of teams in real fixtures (8). This happens everytime I replace a youth team (e.g Jong Ajax) with a team from a lower league.
I think that is because the teams from the lower league are not in the real fixtures.
So my question is: How do I remove the real fixtures?

(I'm using Advanced Rules because I want to redesign the reserve and youth leagues)