Category looses parent in edit mode

Hi,

after creating a bilanguage site from scretch (with the polylang plugin), we need to change the hierarchy of the categories. I tried to disable the synchronization, but in the posts -> categories -> edit still no available choose for a parent. In every other aspect the category has its parent.

I would appreciate a help with this, since if I can’t solve it with the plugin, we need to recreate all the categories with the new structure.

Thanks, Martina

https://www.ads-software.com/plugins/polylang/