Then how has she been riding for Virtu this season and Astana before that? Is this a new requirement?
For years niche sports athletes have had shell jobs, Tatiana Guderzo represented Valdarno when she was World Champion but also the Italian prison service. Wintersportsmen and women almost all have secondary roles in  the military, the Zollverein, the police and so on, or sports scholarships like college athletes in the US and Canada, and even have independent championships for these professions.
That's also a real blow for Movistar because Bertizzolo is really good. The question will then be, what happens? Is it just some wrangle? Does she end up not able to ride at the top level at all because she can't race for a WT team? (And if so, surely whatever non-WT team she ends up on will surely be welcomed at the majority of top races, she was 4th at the Ronde van freaking Vlaanderen this season)