Mailbox creation not syncing from Mac to iPhone Mail

I´m using mail on Imac, macbook and Iphone. I have multiple accounts. Between the Imac and Macbook there are no issues. I use mailboxes, and under those again; sub mailboxes. I have an issue with syncing this to the Iphone. And for this one account it`s working just fine, creating mailboxes(first line), and sub mailboxes(second line), there all the mails and creation of mailboxes flows both ways. But for all the other accounts there is an issue. When I create an mailbox on the Imac or Macbook idosen`t flow to the Iphone. When I create it on the Iphone it`s all good.

All the accounts are installed in the same way, with all the same settings throughout the hardware(Imac, Macbook and Iphone). Set up as IMAP.